WO2003005005A1 - Procede de mesure optique de prelevement biologique et appareil de mesure optique de prelevement biologique - Google Patents
Procede de mesure optique de prelevement biologique et appareil de mesure optique de prelevement biologique Download PDFInfo
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- WO2003005005A1 WO2003005005A1 PCT/JP2001/005752 JP0105752W WO03005005A1 WO 2003005005 A1 WO2003005005 A1 WO 2003005005A1 JP 0105752 W JP0105752 W JP 0105752W WO 03005005 A1 WO03005005 A1 WO 03005005A1
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- image
- biological sample
- fluorescence
- transmitted light
- optical measurement
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N21/6456—Spatial resolved fluorescence measurements; Imaging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Optical investigation techniques, e.g. flow cytometry
- G01N15/1429—Signal processing
- G01N15/1433—Signal processing using image recognition
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/76—Chemiluminescence; Bioluminescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1734—Sequential different kinds of measurements; Combining two or more methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6439—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" with indicators, stains, dyes, tags, labels, marks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6491—Measuring fluorescence and transmission; Correcting inner filter effect
Definitions
- the present invention relates to a biological sample optical measurement method and a biological sample optical measurement device for capturing a fluorescence image and a transmitted light image of a biological sample.
- the method of detecting infection or abnormalities by reacting cells such as infectious disease viruses or cancer with fluorescently labeled antibodies or nucleic acid probes is widely used as a cytodiagnosis or infectious disease inspection method (see “Clinical Testing Extra Number” No. ⁇ Cytodiagnosis I. Prospects for the 21st Century> Vol. 44, No. 11, "Medical Shoin, Tokyo, October 2000”).
- the fluorescent label may be non-specifically adsorbed to an object or wall other than the target, and it is necessary to detect the presence of the target virus or gene in the cell or tissue. A contrast with an image showing the structure is desired.
- the fluorescence measurement may be affected by the dye for staining, and it is necessary to devise a method to avoid this. For example, it is possible to obtain a transmission image of cells without performing staining by using a phase difference, but it is difficult to obtain a clear contrast like a stained image. Also, it is extremely difficult to accurately compare the positions of the real cell image and the fluorescence image with manual microscope operation.
- Japanese Patent Application Laid-Open No. 2000-310637 is a means for measuring cells, but uses a chemical luminescent substance as a label, and adjusts the field of view of a microscope to a luminescence position detected from a luminescence image. Although it is said that the stained cell structure is observed, it is difficult to determine the correspondence between the luminescent label and the cell, as described above, since each image of luminescence and staining is evaluated individually. .
- Japanese Patent Application Laid-Open No. 8-12099 discloses that a fluorescent image generated by irradiation with a fine electron beam or the like is captured by a photoelectric conversion device while capturing a fine image of a biological sample with a tunneling scanning electron microscope, and the fine image is converted into a photoelectric image.
- a method of superimposing image data obtained by a conversion device is disclosed.
- since the fluorescence is detected while capturing a fine image with a tunneling scanning electron microscope there is a problem that a device configuration for obtaining a final image becomes very complicated.
- the present invention has been devised in view of such a situation, and a biological sample optical measurement method and a biological sample optical system capable of detecting an accurate position of fluorescence or luminescence at a predetermined portion of a biological sample. It is intended to provide a measuring device.
- the present invention that has achieved the above object includes the following.
- a biological sample optical measurement device characterized by displaying a luminescence image and the transmitted light image in a superimposed manner.
- the biological sample optical measurement device further comprising an optical measurement means for measuring the fluorescence or luminescence image and the transmitted light image.
- An optical identification mark is provided, a holder for holding the biological sample is provided, and the fluorescence or luminescence image and the transmitted light image are positioned and imaged with reference to the optical identification mark of the holder.
- the biological sample optical measurement device according to (6).
- the optical identification mark is a plurality of ring-shaped patterns. After obtaining the center point coordinates of each ring-shaped pattern from the image data of the optical identification mark, the fluorescent mark is determined using the center point coordinates as a reference point.
- the optical measurement means first captures the fluorescence or luminescence image, and then captures the transmission light image after performing a staining process on a biological sample for transmission light image measurement.
- the biological sample optical measurement device according to (7).
- the biological sample optical measurement device according to (6), further including a staining processing unit for performing a staining process on the biological sample.
- a fluorescent or luminescent image is obtained from a biological sample to which a fluorescent substance or a luminescent substance is bound, and a transmitted light image is obtained from the biological sample that has been stained.
- the biological sample optical measurement device according to (6).
- a fluorescence or emission detection unit for detecting fluorescence or emission emitted from a biological sample, and irradiating the biological sample with light and detecting transmitted light transmitted through the biological sample by the irradiation of the light.
- a transmitted light detection unit ; an image storage unit for storing each image data of the fluorescence or emission image measured by the fluorescence or emission measurement unit and the transmitted light image measured by the transmission light detection unit; and an image storage unit
- An image data calculation unit for calculating the image data of the obtained fluorescence or luminescence image and the image data of the transmitted light image, and the image data calculation unit calculates the image data of the fluorescence or luminescence image and the image data of the transmitted light image
- a biological sample optical measurement device comprising: an image display unit for displaying the fluorescence or emission image and the transmitted light image in a superimposed manner.
- the fluorescence or emission detection unit irradiates the biological sample with the optical beam while scanning the same, and detects the fluorescence excited from the biological sample by the irradiation of the optical beam.
- the fluorescence or luminescence detecting section detects luminescence generated by performing luminescence processing on the biological sample, wherein the biological sample optical measurement according to (14) is characterized in that:
- the fluorescence or emission detection unit inputs the fluorescence excited from the biological sample as two-dimensional image information, and the transmitted light detection unit receives the two-dimensional image information input to the fluorescence or emission detection unit.
- FIG. 1 is a main part configuration diagram showing a biological sample optical measurement device to which the present invention is applied.
- FIG. 2A is a top view of a main part of the biological sample holding unit.
- FIG. 2B is a top view of a main part of another biological sample holding unit.
- FIG. 2C is a top view of a main part of still another biological sample holding unit.
- FIG. 3A is a conceptual diagram for explaining the alignment, and is a conceptual diagram showing a transmitted light image of the identification mark.
- Figure 3 (b) is a conceptual diagram for explaining the alignment, and is a digitized transparent image.
- FIG. 4 is a conceptual diagram showing a light-exposed image.
- FIG. 3 (c) is a conceptual diagram for explaining the alignment, and is a characteristic diagram showing the intensity distribution on the “row” side.
- FIG. 3 (d) is a conceptual diagram for explaining the alignment, and is a characteristic diagram showing the intensity distribution on the “co lumn” side.
- FIG. 4 (a) is a conceptual diagram for explaining a process of synthesizing a fluorescence image and a transmitted light image, and is a conceptual diagram showing cells to be measured.
- FIG. 4 (b) is a conceptual diagram for explaining the process of synthesizing the fluorescent light image and the transmitted light image, and is a conceptual diagram showing the fluorescent light image.
- FIG. 4 (c) is a conceptual diagram for explaining the process of synthesizing the fluorescence image and the transmitted light image, and is a conceptual diagram showing the transmitted light image.
- FIG. 4D is a conceptual diagram for explaining the process of synthesizing the fluorescent light image and the transmitted light image, and is a conceptual diagram showing an example of the synthesized image.
- FIG. 4 (e) is a conceptual diagram for explaining the process of synthesizing the fluorescence image and the transmitted light image, and is a conceptual diagram showing another example of the synthesized image.
- FIG. 4 (f) is a conceptual diagram for explaining the process of synthesizing the fluorescence image and the transmitted light image, and is a conceptual diagram showing still another example of the synthesized image.
- FIG. 5 is a main part configuration diagram showing another biological sample optical measurement device to which the present invention is applied.
- FIG. 6 is a main part configuration diagram showing another biological sample optical measurement device to which the present invention is applied.
- FIG. 7 is a perspective view of a main part showing a sample staining section of the biological sample optical measurement device shown in FIG.
- Transmitted light image storage unit 14 ... Image buffer, 15 ... Image data Data calculation unit, 16: Image display unit, 17: Mercury lamp, 18: Bandpass filter, 19: Two-dimensional monochromatic image sensor, 20: Biological sample holder with identification mark, 21 ...
- FIG. 1 shows a biological sample optical measurement apparatus to which the present invention is applied.
- the biological sample optical measurement device includes a biological sample holding unit 2 holding a sample 1 and a biological sample holding unit driving system 3 for driving the biological sample holding unit 2 to a desired position.
- the biological sample optical measurement device determines whether the specimen 1 is infected with a virus, for example, HPV, HCV, HIV, etc., and identifies the site of the virus infection.
- Specimen 1 includes biological tissue sections, cultured cells, or smears to be examined, and shall be subjected to probe DNA hybridization.
- the probe DNA contains a base sequence that can hybridize to the virus-derived DNA to be discriminated, and has a fluorescent label attached thereto.
- the fluorescent labeling substance is not particularly limited.
- a substance which emits fluorescence having a longer wavelength than the wavelength of the excitation laser when irradiated with an excitation laser having a predetermined wavelength can be used.
- the fluorescent labeling substance include Cy-2, Cy-3, Cy-5, and Cy-7, which are phosphors manufactured by Amersham Pharmacia Biotech.
- a chemical or bioluminescent substance may be bound to the probe DNA instead of the fluorescent labeling substance.
- Chemical or bioluminescent substances include alkaline phosphatase, luciferase, luciferin, ⁇ Luoxidase, luminol and the like can be used.
- the biological sample holder driving system 3 includes a support guide 3-1 for supporting the biological sample holder 2 and a stage 3-2 for rotating the biological sample holder 2 in an in-plane direction ( ⁇ axis).
- the X-axis fine movement stage 3-3 for moving the biological sample holder 2 in a predetermined direction (X axis) in the plane, and the biological sample holder 2 in the direction (Y axis) orthogonal to the X axis in the plane.
- the biological sample holder drive system 3 includes the ⁇ -axis adjustment stage 3-2, the X-axis fine movement stage 3-3, the Y-axis fine movement stage 3-4, and the X-axis coarse movement stage 3-5. It has a drive control unit 3-6 that controls the drive of the motor.
- the drive controller 3-6 controls the driving of the X-axis fine movement stage 3-3 and the Y-axis fine movement stage 3-4, so that the biological sample holder 2 holding the specimen 1 can be scanned in a desired direction. Can be.
- the biological sample optical measurement device consists of a fluorescence excitation laser light source 4 for measuring the fluorescence image of the specimen 1 held in the biological sample holder 2, an excitation light optical system 5, a long-pass filter 6, a fluorescent optical system 7, and a fluorescence detector. Part 8 is provided.
- the fluorescence excitation laser light source 4 includes, for example, a semiconductor laser device, a YAG laser device, a He—Ne laser device, an Ar laser device, or the like, and can emit an excitation laser having a predetermined wavelength.
- a laser light source that emits an excitation laser having a desired wavelength is selected according to the type of the fluorescent labeling substance bound to the probe DNA.
- the fluorescence excitation laser light source 4 may be a laser device that emits a laser having a plurality of wavelengths corresponding to each fluorescent labeling substance, or each fluorescent labeling substance. A plurality of laser devices that emit lasers of wavelengths corresponding to the wavelengths are used.
- the excitation light optical system 5 has a lens or the like, and can focus the excitation laser emitted from the fluorescence excitation laser light source 4 on the specimen 1.
- the long-pass filter 6 can transmit only a wavelength component exceeding a predetermined wavelength.
- the fluorescent optical system 7 has a condenser lens, and can collect the fluorescent light transmitted through the long-pass filter 6.
- the fluorescence detection unit 8 has, for example, a photomultiplier tube or an optical sensor such as a CCD, detects the fluorescence collected by the fluorescence optical system 7, and converts the fluorescence intensity of the detected fluorescence into digital data.
- the biological sample optical measurement device includes a transmitted light source 9, a transmitted light optical system 10, and a two-dimensional color image sensor 11 for measuring a transmitted light image of the specimen 1 held in the biological sample holding unit 2.
- the transmitted light source 9 is, for example, a halogen lamp, and can emit transmitted light that passes through the specimen 1.
- the transmitted light optical system 10 has a lens or the like, and can collect transmitted light transmitted through the specimen 1.
- the two-dimensional color image sensor 11 detects the transmitted light condensed by the transmitted light optical system 10 and converts a color image of the detected transmitted light into image data of R, G, and B colors.
- the biological sample optical measurement device includes a fluorescence image storage unit 12 for storing digital data relating to a fluorescence image obtained by the fluorescence detection unit 8 and a transmitted light image storage for storing image data obtained by the two-dimensional color image sensor 11.
- Unit 13 an image buffer 14 for reading and storing digital data and image data stored in the fluorescent image storage unit 12 and the transmitted light image storage unit 13, and a digital data and image data stored in the image buffer 14.
- An image data calculation unit 15 that calculates display data by combining data from the display image data synthesized by the image data calculation unit 15 and stored in the image buffer.
- an image display unit 16 for displaying.
- the biological sample holding unit 2 has a measurement target region R and an identification mark for accurately positioning the biological sample optical measurement device.
- . 2 (a) to 2 (c) show variations of the biological sample holding unit 2, respectively.
- the biological sample holder 2 shown in FIG. 2 (a) includes a substrate, a measurement target region R arranged substantially at the center of the substrate, and a pair of identification marks arranged so as to sandwich the measurement target region R. It is composed of la and lb.
- the substrate is made of, for example, a quartz glass plate having a thickness of 0.5 to 5 mm or a material in which at least the measurement target region R is transparent to the above-described excitation laser.
- the identification marks u la and u lb each have a concentric shape with a diameter of 5 to 100 zm, and are formed by forming a ring portion by etching the substrate and then printing a fluorescent agent inside the ring portion. Is done. By forming the identification marks l-la and lb in this way, it is possible to recognize from both the fluorescence detecting unit 8 and the two-dimensional color T image sensor 11.
- the biological sample holder 2 shown in Fig. 2 (b) is, for example, a commercially available slide glass.
- information on the specimen is recorded by a bar code 3 and two identification marks la and lb are provided on a tag seal 2 on which the bar code 3 is printed. That is, the biological sample holder 2 shown in FIG. 2 (b) is formed by attaching the tag shield 2 to a position other than the measurement target region R on a commercially available slide glass or the like.
- the biological sample holding unit 2 shown in FIG. 2 (c) has a substrate, a measurement target region R arranged substantially at the center of the substrate, and four identifications arranged at four corners of the measurement target region R. It consists of separate la, ulb, l-lc and uId. That is, in the biological sample holder 2 shown in FIG. 2 (c), the region surrounded by connecting the four identification marks 1-la, 1-lb, tolc, and toId in this order is the measurement target area R. It has become.
- the alignment of the biological sample holder 2 shown in FIGS. 2 (a) to 2 (c) is performed in the following procedure based on the identification mark la, 1-lb (1-lc, 1-ld).
- the identification mark 1-la is moved so as to be within the measurement range of the transmitted light image, and the transmitted light image of the identification mark la is measured (Fig. 3 (a)).
- the distance between the origin position of the X-axis fine movement stage 3-3 and the Y-axis fine movement stage 3-4 obtained from the drive control unit 3-6 and the center position of the identification mark 1a is obtained.
- the obtained transmitted light image of the identification mark la is digitized to obtain a digital image of the mxn matrix-like pixels of the identification mark la (FIG. 3 (b)).
- the intensity distribution on the “row” side in the obtained digital image is obtained (Fig. 3 (c)). That is, in the graph showing the relationship between the signal strength and the X coordinate shown in Fig. 3 (c), W is set so that the interval between the maximum values of the signal strength is maximum, and the X coordinate that is W / 2 is identified.
- the intensity distribution on the “column” side in the obtained digital image is obtained (Fig.
- the center point (Ya-center) of the discrimination mark la in the Y-axis direction is obtained.
- the center point is obtained as coordinates (Xa-center, Ya-center).
- the center coordinates (Xa-center, Ya-center) of the obtained identification mark 1-la are set as the origin in image measurement described later.
- the center coordinates of the identification mark la are recorded in the drive control section 3-6.
- the X-axis fine movement stage 3-3 and the Y-axis fine movement stage 3-4 are driven, the transmitted light image of the identification mark 1-lb is measured, and the center coordinates of the identification mark lb are obtained.
- the center coordinates of the identification mark 1-lb can be obtained as (Xb-center, Yb-center), similarly to the identification mark la described above.
- the 0-axis adjustment stage 3-2 is driven so that the straight line connecting the identification mark la and the center point of 1-lb is parallel to the X axis.
- the 0-axis adjustment stage 3-2 is driven so that the angle ⁇ between the straight line connecting the center points of the identification marks la and 1-lb and the X-axis becomes zero.
- the origin of the biological sample holding unit 2 as the center coordinates of the identification mark tra, imaging of a transmitted light image and imaging of a fluorescence image are performed. As described above, the origin used for capturing the transmitted light image and the fluorescent image can be obtained.
- the identification marks tra and 1-lb can be confirmed with high accuracy and in a short time at the time of alignment.
- the biological sample holding unit 2 shown in FIG. 2 (b) can use a commercially available slide glass as a consumable, cost can be reduced.
- the biological sample holder 2 shown in Fig. 2 (c) has discriminating devices la, 1-lb, 1-lc, and 1-Id at the four corners of the measurement target area R, respectively. At the same time as the above-described alignment, the measurement target region R can be recognized with high accuracy and speed. Further, even if the biological sample holder 2 has a different shape, the measurement target region R can be easily confirmed.
- the biological sample holder is not limited to those shown in FIGS. 2 (a) to 2 (c), but may be used for positioning using the end surface of the biological sample holder 2 as a reference plane, or for fixing the specimen 1. At this time, remarking may be performed with fluorescent beads or the like at an arbitrary location in the vicinity of the measurement target region R, and this may be set as the origin. In such a case, the biological sample holder 2 should perform image measurement alignment without performing special processing in advance. Can be.
- the fluorescence image and the transmitted light image of the specimen 1 are captured as follows using the biological sample optical measurement device in which the biological sample holding unit 2 is aligned.
- Cy-5 (R) manufactured by Amersham Pharmacia Biotech Co., Ltd. was bound as a fluorescent label to a DNA probe having a nucleotide sequence that hybridizes to the virus derived from virus, and the virus against cells was used using the DNA probe. Judgment of infection and identification of infection site.
- a fluorescence image of the specimen 1 is captured.
- the specimen 1 is irradiated with an excitation laser from the laser light source 4.
- an excitation laser from the laser light source 4.
- Cy-5 (R) manufactured by Amersham Pharmacia Biotech Co., Ltd. is used as the fluorescent label
- a semiconductor laser that emits a laser for exciting fluorescence at a wavelength of 635 nm is used as the laser light source 4.
- fluorescence having a wavelength of 670 nm or more is observed in the cells.
- the fluorescence observed in the cells can pass through the long-pass filter 6, is collected via the fluorescence optical system 7, and enters the fluorescence detection unit 8.
- the fluorescence excitation laser is shielded by the long-pass filter 6 and does not enter the fluorescence detector 8.
- fluorescence of the specimen 1 can be detected.
- the detected fluorescence intensity is converted into, for example, 16-bit digital data and stored in the fluorescence image storage unit 12.
- the excitation laser is focused by the excitation light optical system 5 to have a spot diameter of 10 m or less.
- the excitation laser is applied to the specimen 1 from the back surface of the biological sample holder 2, and the biological sample holder 2 is moved by the biological sample holder drive system 3, whereby the laser excitation part for excitation is irradiated.
- Fluorescence is detected by the fluorescence detector 8 while scanning.
- the fluorescence detection unit 8 can obtain a fluorescence image with a resolution of lOtm.
- sample 1 since sample 1 has been subjected to hybridization treatment with probe DNA corresponding to the virus to be tested, it is determined whether or not the sample 1 is infected with the target virus by examining the presence or absence of fluorescence in sample 1.
- Primary screening can be performed. When fluorescence is observed in the specimen 1 by this primary screening, the position is stored in the drive control unit 3-6, and the position is determined in the transmitted light image measurement described later. In this case, the reference measurement position is used.
- the intensity of irradiation light on the fluorescent labeling substance can be increased, and as a result, the amount of fluorescence emitted by the fluorescent labeling substance can be increased. And the fluorescence detection sensitivity can be improved.
- a fluorescent excitation laser light source 4 that can emit excitation lasers of different wavelengths is used.
- a plurality of fluorescences observed in the specimen 1 can be detected, and a fluorescence image of the plurality of fluorescences can be obtained.
- the transmitted light image is measured for the specimen 1 in which the presence of the fluorescent labeling substance is confirmed by the fluorescent image.
- the specimen 1 after the fluorescence image measurement is separated from the biological sample optical measurement device together with the biological sample holding unit 2 and subjected to a staining process so that the cell structure contained in the specimen 1 can be observed. Is preferred.
- the biological sample holder 2 is attached to the biological sample holder drive system 3.
- the 0-axis adjustment is performed in the same manner as the alignment of the biological sample holder 2 described with reference to FIG.
- the stage 3-2 is driven to correct the angle 0 between the straight line connecting the center points of the identification marks u la and lb to the X axis so that it becomes 0, and the center coordinates of the identification mark u la, that is, the origin To match.
- the X-axis fine movement stage 3 is moved so that the center of the identification mark 1-la observed by the two-dimensional image sensor 11 coincides with the center coordinates of the identification mark 1-la recorded in the drive control unit 3-6.
- -3 and Y-axis fine movement stage 3-4 are driven.
- a transmitted light image of the specimen 1 is captured.
- the coarse movement stage 3-5 in the X-axis direction is driven, and the biological sample is held so that the position (reference measurement position) where the fluorescence was observed at the time of capturing the fluorescence image is at least within the field of view.
- Move part two The transmitted light image is captured by emitting a continuous spectrum in the visible light region from the transmitted light source 9 and detecting the transmitted light of the specimen 1 by the two-dimensional color image sensor 11.
- the transmitted light image detected by the two-dimensional color image sensor 11 is stored in the transmitted light image storage unit 13 as image data for each of R, G, and B colors of 8 bits.
- a transmitted light image can be captured with high resolution. For example,
- the two-dimensional color image sensor 11 is composed of a CCD with a size of 1000 x 1000 pixels and a size of 12 mm each, and the magnification of the transmitted light optical system 10 is 30 times, the minimum for a 0.4 mm square area is 0.
- a transmitted light image can be obtained with 4 m pixels.
- the optical resolution determined by the transmitted light optical system 10 is 0.4 ⁇ or less.
- the resolution that is, the size of the pixel, becomes ⁇ .
- the transmitted light image has a resolution of about ⁇ in general, and a cell nucleus of about 2 m, so the transmitted light image must be able to resolve at least the cell nucleus. , 0.1 to 1 m.
- the resolution of the fluorescence image can be determined by determining whether the fluorescence of the fluorescent labeling substance bound to the probe DNA is inside or outside the nucleus of the cell nucleus, or inside or outside the cell. May be lower than the resolution.
- the resolution of the transmitted light image is preferably 2 to 20 times the resolution of the fluorescent light image.
- the fluorescent light image recorded in the fluorescent light image storage unit 12 and the transmitted light image recorded in the transmitted light image storage unit 13 are superimposed on each other and displayed on the image display unit 16.
- the fluorescent light image is read out from the fluorescent light image storage unit 12 and stored in the image buffer 14
- the transmitted light image is read out from the transmitted light image storage unit 12 and stored in the image buffer 14.
- the fluorescence image and the transmitted light image stored in the image buffer 14 are combined by the image data calculation unit 15 to create display screen data.
- association means, for example, that the mutual position of the fluorescence image and the transmitted light image is virtually adjusted or controlled based on the position information of the biological sample or the biological sample holding unit 2 that holds the biological sample.
- the image buffer 14 is composed of 8 bits for each color of R, G, and B each corresponding to a pixel of the transmitted light image.
- the image data of a single color 16 bits of the fluorescent light image is converted by the image data calculation unit 15 so as to be mapped to data of 24 bits gradation.
- the display screen data is obtained by the image data calculation unit 15 performing a logical OR operation of the corresponding 24-bit pixel data of the fluorescence image and the transmitted light image in the image buffer 14.
- the obtained display image data is stored again in the image buffer 14.
- FIG. 4 (d) shows the case where the fluorescence of the fluorescent labeling substance is not detected, suggesting that there is no virus-derived DNA to be detected.
- FIG. 4 (e) shows the case where the fluorescence of the fluorescent labeling substance was detected in the cytoplasm, suggesting that the virus-derived DNA to be detected is present in the cytoplasm.
- FIG. 4 (f) shows the case where the fluorescence of the fluorescent labeling substance was detected in the nucleus, suggesting that the virus-derived DNA to be detected exists in the nucleus.
- more information can be obtained from the display image by combining and displaying the transmitted light image and the fluorescent image in the determination of positive / negative by detecting the fluorescence of the fluorescent labeling substance. it can. Specifically, it is possible to not only determine positive / negative based on the detection of fluorescence, but also to identify a fluorescent site in detail.
- the transmitted light image is captured at a higher resolution than the fluorescence image. In this case, the site emitting fluorescence can be identified in more detail.
- the transmission light image is captured after capturing the fluorescence image, and the transmission light image is captured so as to include at least a part where the fluorescence is detected.
- the excitation laser is applied to the specimen 1 to detect the fluorescence from the fluorescent labeling substance. For this reason, the irradiation light intensity density for the sample 1 can be increased, and the fluorescence of the fluorescent labeling substance can be detected with high sensitivity. Therefore, in this example, the probability of finding cells having MA from the virus to be detected can be increased.
- the X-axis fine movement stage 3-3 and the Y-axis fine movement stage 3-4 are used to capture the fluorescence image and the transmitted light image.
- the X-axis coarse movement stage 3-5 is used when switching between imaging and scanning. For this reason, according to the biological sample optical measurement device, the precise alignment and the switching can be performed quickly and with high accuracy.
- the present invention is not limited to the biological sample optical measuring device as described above, and may be a biological sample optical measuring device as shown in FIG.
- the biological sample optical measurement device shown in FIG. 5 includes a mercury lamp 17 that emits diffused light that excites a fluorescently labeled substance, and a wavelength component that overlaps with the fluorescence emitted by the fluorescently labeled substance among the wavelengths included in the diffused light.
- a band-pass filter 18 to be removed and a two-dimensional monochromatic image sensor 19 such as a CCD for detecting fluorescence from the fluorescent labeling substance excited in the sample 1 are provided.
- a mercury lamp 17 was used to emit diffused light.
- the present invention is not limited to this.
- any device capable of emitting diffused light such as a xenon lamp or a mercury-xenon lamp, may be used.
- a light source can be used as appropriate.
- Cy-5 (R) when the above-described Cy-5 (R) is used, a bandpass filter 18 that cuts a wavelength component other than 600 to 650 nm is used.
- the biological sample optical measurement device described in this example has the same configuration as the biological sample optical measurement device shown in FIG. 1 except for these configurations.
- the diffused light transmitted through the bandpass filter 18 is applied to the specimen 1 when capturing a fluorescence image.
- the two-dimensional monochrome image sensor 19 detects the fluorescence in a predetermined area in the biological sample holding unit 2.
- the fluorescent image detected by the two-dimensional monochromatic image sensor 19 is stored in the fluorescent image storage unit 12. '
- this biological sample optical measurement device irradiates the sample 1 with diffused light and detects fluorescence using the two-dimensional monochromatic image sensor 19.
- Driving unit drive system 3 to scan diffused light No need. Therefore, the biological sample optical measurement device shown in FIG. 5 can detect the fluorescence of the specimen 1 in a very short time.
- this biological sample optical measurement device can use any fluorescent labeling substance.
- the biological sample optical measurement device can transmit only a desired wavelength out of the wavelengths contained in the diffused light emitted from the mercury lamp 17 by simply replacing the bandpass filter 18, Even fluorescent labeling substances can be excited.
- this biological sample optical measurement device when measuring fluorescence in the specimen 1 using a plurality of fluorescent labeling substances having different excitation wavelengths, a plurality of bandpass filters 18 are sequentially used in accordance with the excitation wavelengths. Thereby, fluorescence from a plurality of fluorescent labeling substances can be sequentially detected.
- viruses e.g. HPV
- Hybridization treatment can also be performed on sample 1 using the probe DNA.
- a plurality of types of bandpass filters 18 are prepared according to the three types of fluorescent labeling substances, and the plurality of bandpass filters 18 are switched as needed during the measurement, so that the fluorescence images of multiple wavelengths in the specimen 1 are individually separated. Can be measured.
- the type of virus that has infected the sample 1 can be determined, and the site of infection with three types of viruses can be identified.
- the number of pixels of the two-dimensional monochromatic image sensor 19 is set to 1000 ⁇ 1000
- the magnification of the fluorescent optical system 7 is set to 10
- the fluorescence image can be captured with a pixel size of 10 m by performing the image measurement of the measurement target area R in two steps while moving the fine movement stage 3-3 while using the reduction optical system.
- the transmission light image can be captured, and the fluorescence image and the transmitted light image can be combined and displayed in the same manner as in the biological sample optical measurement device shown in FIG. Special
- the fluorescence is excited by the mercury lamp 17 as the diffusion light source and the fluorescence is detected by the two-dimensional image sensor 19, so that the fluorescent image of a wide area of the specimen 1 can be captured in a short time.
- This method has the effect of improving the primary screening throughput when the number of samples 1 is large.
- a fluorescent labeling substance was bound to the probe DNA and a fluorescent image of the specimen 1 was taken.
- a bioluminescent substance may be bound.
- the biological sample optical measurement device since the luminescence reaction of the chemical or bioluminescent substance is performed in a solution, it is preferable to provide the biological sample optical measurement device with a reagent dropping unit for dropping the reagent onto the sample 1. In this case, it is preferable to flatten the surface of the liquid dropped onto the specimen 1 with a cover glass or the like during the measurement of the luminescence image to prevent the focus from being shifted.
- the luminescence image detection system is arranged so as to measure the luminescence image from the lower part of the biological sample holder 2, it is not necessary to flatten the liquid surface with a cover glass or the like.
- the biological sample holder 2 needs to be transparent to the emission of a chemical or bioluminescent substance.
- a chemical or bioluminescent substance is used instead of a fluorescent label, a laser light source for fluorescence excitation to excite the fluorescent label 4, an excitation light optical system 5, a long-pass filter 6, a band-pass filter 18, etc. There is no need to arrange.
- the biological sample optical measurement apparatus to which the present invention is applied includes a sample staining section 21 for performing a staining process on the specimen 1 before capturing a transmitted light image. It may be something.
- the specimen 1 is held in the biological sample holding unit 20 with the identification mark.
- the sample staining section 21 includes a staining processing section including a staining liquid spraying section 22 and a staining liquid collecting section 23, and a washing liquid spraying section 24 and a washing liquid collecting section 25.
- a cleaning unit the biological sample optical measurement device includes movement control means (not shown) for moving the biological sample holding unit 20 with the identification mark in the direction indicated by arrow A in FIG.
- the staining liquid spraying section 22 is formed of a cylindrical member having a plurality of spray ports formed on a side facing the staining liquid collecting section 23. Multiple spray ports have identification marks by movement control means When the biological sample holder 20 is moved, a staining solution or the like can be sprayed on at least the entire specimen 1.
- the cleaning liquid spray unit 24 is formed of a cylindrical member having a plurality of spray ports formed on a side facing the cleaning liquid recovery unit 25. The plurality of spray ports are provided so that a washing liquid or the like can be sprayed on at least the entire sample 1 when the movement control means moves the biological sample holding section 20 with the identification mark.
- Each of the staining liquid collecting section 23 and the washing liquid collecting section 25 is composed of a waste liquid port formed at the lowest part and a slope inclined downward toward the waste liquid port. Further, between the staining liquid collecting section 23 and the washing liquid collecting section 25, a ridge is formed to prevent mixing of the staining liquid and the washing liquid.
- the staining liquid spraying section 22 is connected to a staining liquid container group 26 via a staining liquid piping system 36.
- the staining liquid piping system 36 has one end connected to the staining liquid spraying section 22 and the other end connected to the waste liquid port of the staining liquid collecting section 23.
- a dye supply pipe 32 and a solenoid valve 29 are provided in a dye solution piping system 36 between the dye spray part 22 and the dye solution group 26.
- a staining solution supply pump 33 and solenoid valves 28 (28-1, 28-2, 28-3 and 28-4) are provided in the staining solution piping system 36 between the staining solution collection section 23 and the staining solution solution 26. Are arranged.
- the cleaning liquid spraying section 24 is similarly connected to the cleaning liquid container group 27 via a cleaning liquid piping system 37.
- the waste liquid port of the cleaning liquid recovery unit 25 is connected to a cleaning liquid waste liquid container 38 via a cleaning liquid piping system 37.
- a cleaning liquid supply pump 34 and a solenoid valve 31 are provided in a cleaning liquid piping system 37 between the cleaning liquid spraying section 24 and the cleaning liquid container group 27.
- a cleaning liquid supply pump 35 and solenoid valves 30 (30-1, 30-2, 30-3, and 30-4) are provided in a cleaning liquid piping system 37 between the cleaning liquid recovery section 25 and the cleaning liquid waste liquid container 38. ing.
- the staining solution container group 26 includes a staining solution A container 26-1, a staining solution B container 26-2, a clearing solution container 26-3, and a pipe washing solution container 26-4. . That is, the staining solution container group 26 includes a plurality of containers separately storing reagents necessary for a staining process for capturing a transmitted light image of the specimen 1 and a washing solution for washing the staining solution piping system 36. I have.
- the staining solution A container 26-1, the staining solution B container 26-2, the clearing solution container 26-3, and the piping washing solution container 26-4 were respectively disposed in the middle of the staining solution piping system 36.
- the continuity with the staining solution piping system 36 is controlled by the solenoid valves 28-1, 28-2, 28-3 and 28-4.
- the cleaning liquid container group 27 includes a cleaning liquid container 27-1 and a separation liquid container. 27-2, affinity liquid A container 27-3 and affinity liquid B container 27-4. That is, the washing liquid container group 27 includes a plurality of containers in which reagents and the like necessary for the washing, sorting, and affinity treatments performed after the completion of the staining process are separately stored.
- the cleaning solution container 27-1, the separation solution container 27-2, the affinity solution A container 27-3, and the affinity solution B container 27-4 are each provided in the middle of the washing solution piping system 37.
- the continuity with the cleaning liquid piping system 37 is controlled by valves 30-1, 30-2, 30-3 and 30-4.
- the continuity of the cleaning liquid waste liquid container 38 with the cleaning liquid waste liquid container 38 is controlled by the solenoid valve 31.
- a staining process is performed on the specimen 1 before capturing a transmitted light image.
- hematoxylin and eosin double staining is used as an example of the staining process.
- the nuclei in the cells are mainly stained blue-violet with hematoxylin, and the cytoplasm, interstitium and fibrin are stained red or dark brown with eosin.
- this staining method general information in cells can be obtained as a transmitted light image without excess or deficiency. Therefore, this staining method is a cell staining method frequently used in pathological diagnosis. By using this staining method, highly accurate transmitted light images can be obtained, and highly accurate diagnosis of the presence or absence of infection and the identification of the infected site can be made in the diagnosis of virus infection.
- the biological sample holding unit 2 is moved in a direction indicated by an arrow A in FIG. 6 by a movement control means (not shown), and the biological sample holding unit 2 is transported to the staining processing unit in the sample staining unit 21. .
- hematoxylin solution supplied from the staining solution A container 26-1 to the sample 1 is sprayed from the staining solution spraying section 22 for about 4 minutes to stain.
- the dye supply pump 32 and the dye recovery pump 33 are operated while only the solenoid valves 28-1 and 29-1 are opened.
- the recovered hematoxylin solution is transferred to the staining solution A container 26-1 and circulated for reuse.
- the biological sample holding unit 2 is moved to the washing processing unit by a movement control means (not shown), and distilled water supplied from the washing liquid container 26-1 to the sample 1 is supplied from the washing liquid spraying unit 24 for about 5 minutes. Wash with water.
- the cleaning liquid supply pump 34 and the cleaning liquid recovery pump 35 are operated while only the solenoid valves 30-1 and 31 are opened. As a result, it is possible to supply only distilled water without mixing other solutions and the like that have entered the cleaning liquid container 26-1, and to supply the supplied distilled water to the cleaning liquid waste liquid container 38 through the cleaning liquid recovery unit 25. Can be recovered.
- the cleaning liquid supply pump 34 and the cleaning liquid recovery pump 35 are operated while the solenoid valves 28-1 and 29-1 are closed and the solenoid valves 28-4 and 29-4 are opened. Let it.
- distilled water can be supplied from the pipe washing liquid container 26-4 into the staining liquid spraying section 22 and the staining liquid piping system 36, and the hematoxylin solution in the staining liquid spraying section 22 and the staining liquid piping system 36 can be supplied. Can be removed.
- the distilled water supplied to the staining liquid spraying section 22 and the staining liquid piping system 36 is collected in the staining liquid collecting section 23.
- a 0.2% hydrochloric acid / 70% alcohol mixed solution supplied from the separation liquid container 27-2 to the sample 1 is supplied from the cleaning liquid spraying section 24 to perform a separation process.
- the solenoid valves 28-2 and 29-2 are opened, and the cleaning liquid supply pump 34 and the cleaning liquid recovery pump 35 are operated.
- washing with distilled water is performed again in the washing treatment section in the same manner as the washing described above.
- the sample 1 is sprayed with a 95% alcohol solution supplied from the affinity solution A container 27-3 to perform the affinity treatment.
- the solenoid valves 28-3 and 29-3 are opened, and the cleaning liquid supply pump 34 and the cleaning liquid recovery pump 35 are operated. By performing this fractionation process, the staining process with hematoxylin is completed.
- the step of staining with eosin solution is performed.
- the biological sample holding unit 2 is moved to the staining processing unit by a movement control means (not shown), and the eosin 'floxin B solution supplied from the staining solution B container 26-2 is sprayed for 7 minutes. And stain.
- a movement control means not shown
- the eosin 'floxin B solution supplied from the staining solution B container 26-2 is sprayed for 7 minutes.
- stain When spraying the eosin / phloxin B solution, operate the dye supply pump 32 and the dye recovery pump 33 while keeping only the solenoid valves 28-2 and 29-2 open. As a result, only the eosin 'Phloxine B solution is sprayed without mixing other staining solutions etc.
- the containers other than the staining solution B container 26-2 can be atomized and the sprayed eosin / phloxin B solution can be collected in the staining solution collecting section 23.
- the recovered eosin 'floxin B solution is transferred to the staining solution B container 26-2, circulated and reused.
- the biological sample holding unit 2 is moved to the washing processing unit by a movement control means (not shown), and the specimen 1 is washed with water as in the case of the staining step with the hematoxylin solution, and the staining solution spraying unit 22 is used. And remove the eosin 'phloxine B solution in the staining solution piping system 36.
- the sample 1 is first subjected to a separation / dehydration treatment by spraying (95% alcohol) and then pure alcohol supplied from the affinity liquid B container 27-4.
- a separation / dehydration treatment by spraying (95% alcohol) and then pure alcohol supplied from the affinity liquid B container 27-4.
- the solenoid valves 28-4 and 29-4 are opened, and the cleaning liquid supply pump 34 and the cleaning liquid recovery pump 35 are operated.
- the biological sample holding unit 2 is moved to the staining processing unit by movement control means (not shown), and the sample 1 is sprayed with xylol supplied from the clearing liquid container 26-3 to perform the clearing process.
- the dye supply pump 32 and the dye recovery pump 33 are operated while only the solenoid valves 28-3 and 29-3 are opened.
- the xylol in the staining solution spraying section 22 and the staining solution piping system 36 is removed in the same manner as in the above-described water washing.
- the biological sample holding unit 20 with the identification mark is transported and fixed in the direction opposite to the arrow A in FIG. 6, and the transmitted light image of the sample 1 is captured.
- the imaging of the transmitted light image can be performed in the same manner as in the above-described example.
- the staining process can be performed by the biological sample optical measurement device, it is possible to measure the transmitted light image after the staining process in a short time after capturing the fluorescent image.
- the biological sample optical measurement device of the present example a large amount of the sample 1 can be processed in a short time, for example, in a virus test or the like, which is effective in improving the throughput.
- the amount of the staining solution used in the examination of a large amount of the sample 1 can be suppressed by circulating and reusing the staining solution.
- the hematoxylin solution used in this example has the following composition. Hematoxylin 5g
- the eosin / phloxin B solution used in this example has the following composition.
- the fluorescence or luminescence image of the biological sample and the transmitted light image are displayed in a superimposed manner. An accurate position of fluorescence or luminescence at a predetermined site of a biological sample can be detected.
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Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2001/005752 WO2003005005A1 (fr) | 2001-07-03 | 2001-07-03 | Procede de mesure optique de prelevement biologique et appareil de mesure optique de prelevement biologique |
EP01945788A EP1406081A4 (en) | 2001-07-03 | 2001-07-03 | METHOD FOR OPTICALLY MEASURING BIOLOGICAL SAMPLING AND OPTICAL MEASURING APPARATUS FOR BIOLOGICAL SAMPLING |
US10/482,614 US7400753B2 (en) | 2001-07-03 | 2001-07-03 | Biological sample optical measuring method and biological sample optical measuring apparatus |
JP2003510930A JP3766421B2 (ja) | 2001-07-03 | 2001-07-03 | 生体試料光学測定方法及び生体試料光学測定装置 |
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US (1) | US7400753B2 (ja) |
EP (1) | EP1406081A4 (ja) |
JP (1) | JP3766421B2 (ja) |
WO (1) | WO2003005005A1 (ja) |
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JPWO2003100086A1 (ja) * | 2002-05-23 | 2005-09-22 | 富士電機ホールディングス株式会社 | 生細胞の計数方法および装置 |
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JPWO2007074923A1 (ja) * | 2005-12-27 | 2009-06-04 | オリンパス株式会社 | 発光測定装置並びに発光測定方法 |
JP2010500571A (ja) * | 2006-08-07 | 2010-01-07 | ゼネラル・エレクトリック・カンパニイ | 組織マイクロアレイの多チャネル画像の共位置合わせシステム及び方法 |
JP2009025275A (ja) * | 2007-07-24 | 2009-02-05 | Shimadzu Corp | 質量分析装置 |
JP2010085219A (ja) * | 2008-09-30 | 2010-04-15 | Nec Soft Ltd | 顕微質量分析の二次元解析画像と、光学顕微鏡撮影の二次元可視画像との自動的位置重ね合わせ方法 |
JP2012150096A (ja) * | 2011-01-20 | 2012-08-09 | Middleland Sensing Technology Inc | 試験紙自動判定方法及びシステム |
JP2013109077A (ja) * | 2011-11-18 | 2013-06-06 | Sony Corp | 画像取得装置、画像取得方法及び画像取得プログラム |
JP2015010910A (ja) * | 2013-06-28 | 2015-01-19 | 株式会社ニコン | 検出方法、検出装置、バイオチップのスクリーニング方法、スクリーニング装置及びバイオチップ |
JP2015017940A (ja) * | 2013-07-12 | 2015-01-29 | 株式会社ニコン | 検出方法、検出装置、バイオチップのスクリーニング方法、スクリーニング装置及びバイオチップ |
JP2019517249A (ja) * | 2016-05-27 | 2019-06-24 | パーキンエルマー セルラー テクノロジーズ ジャーマニー ゲーエムベーハーPerkinelmer Cellular Technologies Germany Gmbh | 細胞培養物の感染の部位の数を決定するための方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1406081A1 (en) | 2004-04-07 |
US7400753B2 (en) | 2008-07-15 |
JP3766421B2 (ja) | 2006-04-12 |
EP1406081A4 (en) | 2011-10-05 |
US20040239916A1 (en) | 2004-12-02 |
JPWO2003005005A1 (ja) | 2004-10-28 |
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