EP1682272A4 - Cassette pour manipuler et contenir des echantillons de tissus pendant des operations de traitement, d'implantation et de coupe au microtome, et procedes correspondant - Google Patents

Cassette pour manipuler et contenir des echantillons de tissus pendant des operations de traitement, d'implantation et de coupe au microtome, et procedes correspondant

Info

Publication number
EP1682272A4
EP1682272A4 EP04794852A EP04794852A EP1682272A4 EP 1682272 A4 EP1682272 A4 EP 1682272A4 EP 04794852 A EP04794852 A EP 04794852A EP 04794852 A EP04794852 A EP 04794852A EP 1682272 A4 EP1682272 A4 EP 1682272A4
Authority
EP
European Patent Office
Prior art keywords
cassette
bottom wall
tissue sample
interior space
holding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP04794852A
Other languages
German (de)
English (en)
Other versions
EP1682272A2 (fr
Inventor
Warren P Williamson Iv
Thomas J Ward
Stephen P Whitlatch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Biopath Automation LLC
Original Assignee
Biopath Automation LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Biopath Automation LLC filed Critical Biopath Automation LLC
Publication of EP1682272A2 publication Critical patent/EP1682272A2/fr
Publication of EP1682272A4 publication Critical patent/EP1682272A4/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/30—Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
    • G01N1/31—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/54—Labware with identification means
    • B01L3/545—Labware with identification means for laboratory containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/02—Identification, exchange or storage of information
    • B01L2300/021—Identification, e.g. bar codes
    • B01L2300/022—Transponder chips
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/30—Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
    • G01N1/31—Apparatus therefor
    • G01N2001/315—Basket-type carriers for tissues

Definitions

  • the present invention generally relates to supports for handling and embedding tissue samples for pathological analysis and, more particularly to cassettes which can receive one or more tissue samples and be embedded and subsequently microtomed with the tissue sample or samples.
  • tissue sample or samples are removed and sent to a pathology laboratory, the tissue will go through a series of procedures performed by a histotechnician and, ultimately, a pathologist, in order to diagnose the tissue.
  • the present invention generally relates to those procedures that are normally performed by the histotechnician to prepare the tissue sample or samples into slides that may be analyzed under a microscope by the pathologist.
  • tissue sample Once a tissue sample is removed from the body of a patient, it is typically placed into a specimen container containing a tissue fixative solution and then the container is transported to a pathology laboratory.
  • the tissue will undergo a process known as "grossing-in" in the pathology lab during which a histotechnician will retrieve the tissue sample from the container, typically cut the tissue into appropriate sizes for tissue processing, place individual samples into the appropriate sized small plastic tissue cassettes, and assign tracking numbers to each cassette. These tracking numbers are then logged into a tracking system used in the laboratory. For the smallest tissue samples, which may only be scrapings, the cassette will have fine mesh openings on the sides and bottoms.
  • the samples are placed into a bag that resembles a tea bag and prevents the smallest tissue samples from escaping.
  • Larger tissue samples are placed into cassettes having somewhat larger slotted openings which are again smaller than the tissue sample inside the cassette.
  • the cassettes are then placed into a stainless steel perforated basket and run through a tissue processing machine, often overnight. This machine uses a combination of vacuum, heat, and chemicals to remove the interstitial fluids. Once the fluids have been removed from the tissue samples, the processing machine immerses the tissues samples in a bath of molten paraffin so that the interstices in the tissue are replaced with paraffin. The histotechnician then removes the basket from the machine and removes the individual tissue cassettes.
  • the histotechnician will individually remove the tissue from each cassette.
  • the histotechnician must carefully orient the tissue sample, based on tissue type, into a stainless steel base mold which is roughly the size of the tissue cassette and is partially filled with molten paraffin.
  • the tissue sample must be manually held, typically using forceps, against the bottom of the mold. If it is not, this could compromise the ability to make proper slices of the tissue later in the microtome.
  • the molten paraffin is then rapidly cooled on a refrigerated plate, which may be a thermal electric cooler (TEC), to partially solidify the paraffin thereby holding the tissue sample in the proper orientation against the bottom of the mold.
  • TEC thermal electric cooler
  • the cassette is then placed on top of the base mold and paraffin is poured through the opened top of the cassette into the base mold.
  • the cassette changes its function at this point in the procedure from a tissue holding component to a fixation device for later use in taking shavings or slices from the solidified paraffin in a microtome.
  • the base mold is chilled until all of the molten paraffin has solidified and the histotechnician removes the stainless steel base mold from the block of embedded paraffin.
  • the tissue sample is thus embedded within a rectangular block of paraffin with a plastic tissue cassette on the opposite side which will then be used as a holder in the chuck of the microtome.
  • the embedding process is accomplished in a batch fashion during which an average histotechnician may embed approximately 40 to 60 cassettes per hour.
  • the blocks of hardened paraffin containing the embedded tissue samples are then ready to be sliced into extremely thin sections for placement on a microscope slide.
  • the histotechnician mounts the embedded tissue block in a chuck on the microtome which is sized to accept the side of the block that has the embedded plastic cassette.
  • the histotechnician can then begin slicing the paraffin block which has the tissue sample embedded opposite to the plastic cassette surface. This yields a ribbon of individual slices of the tissue embedded in the paraffin.
  • the action of the microtome causes the individual slices to stick together when done properly and, subsequently, these very thin ribbons of slices are floated into a water bath and a glass slide is carefully placed underneath the slice. The slice, with the thin sectioned tissue sample embedded therein, is then adhered to the top of the slide.
  • the slides are placed into an automatic staining machine. The staining machine goes through a series of infiltrating steps to stain the different tissue and cells of the slide different colors. This helps the pathologist identify different structures and makes it easier to find any abnormalities in the tissue. After the staining procedure is complete, the slides are cover slipped and prepared for the pathologist to place under a microscope to analyze.
  • the '032 patent relates to a tissue trapping and supporting device, which may be a cassette, and which may be cut with a microtome.
  • a tissue trapping and supporting device which may be a cassette, and which may be cut with a microtome.
  • the tissue sample is immobilized within the cassette and subjected to the process for replacing tissue fluids with paraffin. Then, the tissue sample and the cassette are sliced at the same time for mounting on microscope slides. Because the tissue sample is never removed from the cassette from the time it is processed in the tissue processing machine to the time that it is cut with the microtome, a significant amount of handling time is saved. Moreover, the chance for human error or tissue loss due, for example, to dropping the tissue during handling, is significantly reduced due to the elimination of separate tissue handling steps.
  • the present invention generally provides a cassette for holding a tissue sample.
  • the cassette includes a body and may also include a lid.
  • the body comprises a bottom wall and one or more side walls extending upwardly with respect to the bottom wall to define an interior space for receiving the tissue sample.
  • a plurality of query points e.g., sensing elements
  • the cassette preferably includes a lid configured to be coupled with the body and movable between open and closed positions.
  • a flange extends along upper portions of at least two of said side walls and the sensing elements may be located on the flange.
  • the sensing elements can further comprise holes or other detectable, computer readable characteristics or elements. The detection can take place in a contact or non-contact manner.
  • This inventive aspect can also or alternatively be applied to a frame member which holds the cassette during processing and/or embedding.
  • the bottom wall of the cassette body preferably transitions to the plurality of side walls with a radiused corner.
  • the bottom wall further includes a plurality of holes having shapes which are radially elongate and/or widen in a direction toward the plurality of side walls generally from a gate or fill location of the cassette body in a mold used to manufacture the cassette.
  • Each of these features can help guide the flow of material for forming the cassette during an injection molding process.
  • the holes in the bottom wall are preferably located generally at the center of the bottom wall and have a teardrop shape and/or oval shape. At least two of the side walls are positioned in opposed relation to one another and the dimension between the opposed side walls varies along the length of the opposed side walls.
  • a stop member in the interior space of the cassette is configured to stop the lid at a minimum distance from the upper surface of the bottom wall.
  • the stop member may be part of the cassette body or part of the lid.
  • an orientation cassette includes a plurality of posts extending upwardly from the bottom wall. The posts are configured to orient the tissue sample therebetween to ensure that the sections taken with the sample are most appropriate for diagnostic purposes.
  • Fig. 1 is a perspective top view of an illustrative biopsy cassette constructed in accordance with the invention.
  • Fig. 1 A is an enlarged view of encircled portion 1A taken from Fig. 1.
  • Fig. 1 A is an enlarged view of encircled portion 1A taken from Fig. 1.
  • FIG. 1 B is an enlarged top view of the cassette bottom wall shown in Fig. 1.
  • Fig. 2 is a perspective bottom view of the biopsy cassette shown in Fig. 1.
  • Fig. 3 is a sectional view taken generally along line 3-3 of Fig. 1.
  • Fig. 4 is a sectional view taken generally along line 4-4 of Fig. 1.
  • Fig. 5 is a sectional view taken generally along line 5-5 of Fig. 1.
  • Fig. 6 is a perspective top view of an illustrative tissue orientation cassette constructed in accordance with the invention.
  • Fig. 7 is a top view of the tissue orientation cassette shown in Fig. 6.
  • Fig. 8 is a perspective view of a frame member constructed in accordance with the invention and adapted to carry a cassette.
  • cassette 10 may be used in an automated embedding apparatus such as the one disclosed in the above incorporated PCT application serial number PCT/US02/30779. More specifically, the apparatus can utilize an opto-electronic identification feature that allows a robotic system to determine which of at least two types of cassettes 10 has been extracted from an input basket.
  • the different types of cassettes 10 may, for example, be of different size or have other differing characteristics and/or function.
  • a plurality of query points which may be holes 12 placed in a flange 14 at the periphery of the cassette body 16, allows an optical scanner to be used to give a binary signal at each query point on the cassette 10.
  • all cassettes 10 are designed to fit into the interior of the frame with a similar registration in the up and down positions.
  • a similar sensing feature may be incorporated into the frame which receives the cassette 10. This feature may be incorporated into many different types of cassettes to be used in conjunction with automated machinery.
  • PCT/US02/30779 a sensor can query each cassette 10 after it has been removed from the input basket. A robotic arm moves the cassette 10 in the frame under a single sensor head.
  • This sensor detects the cassette presence to make certain that the cassette 10 has not been dropped or improperly grasped from the input basket and is more specifically detecting a binary (signal vs. no signal) to communicate with the machine control to proceed to embed the cassette 10.
  • This feature may be enhanced such that the sensor and control proceed to determine how to process the cassette 10 based on cassette size, type and/or other parameters. Other parameters may include the type of base mold and any special heating or cooling parameters that are necessary for processing and/or embedding a particular type of cassette.
  • the sensor is used to query each cassette/frame assembly at each input location of, for example, a plurality of locations where the control has been programmed to check for a signal. As mentioned above, four holes 12 at the corners of the flange 14 are currently used for the input locations.
  • Center portions 14a, 14b of the cassette flange 14 could be used to increase the number of possible cassette configurations the machine can discern.
  • the corner locations of holes 12 allow three cassette configurations to be detected and includes a redundant routine since the cassette 10 is symmetrical and could be installed by an operator in two different orientations within the frame (not shown) which carries the cassette 10 throughout the process. There must be a high degree of certainty that the automated machinery has correctly detected and verified the cassette configuration. Using a redundant sensing area is one way to facilitate improved certainty.
  • the sensor in the preferred embodiment is an emitter/detector sensor, whereby a sensing light beam (infrared or other color spectrum) is directed towards a tuned sensor.
  • the emitter receives enough signal to register. If the query point is opaque or diffuse (e.g., no hole 12 detected) the tuned sensor will not receive enough light to register a signal. Since the cassette assemblies are pre-processed in a tissue processor which involves the use of a paraffin containing solution, there is a possibility of a meniscus of paraffin blocking one of the sensor holes 12. The sensor holes 12 can be formed large enough to minimize this possibility.
  • the cassette 10 is rectangular with two long sides and two short sides and, as mentioned, can be installed in the frame in two different orientations along the long axis of the cassettelO.
  • the sensing configuration is designed to take this into account, that is, the configuration allows the machine to discern the three cassette types regardless of the orientation of the cassette 10 in the frame. Each long side supplies enough information to properly detect the cassette type and the other long side carries redundant information. If more than three configurations are required, then additional sensing holes (not shown) may be placed on either side of the centerline at the edges. With regard to the actual sensing plan it is as follows for three possible cassettes: Large tissue cassette: All corners opaque (no holes 12) Signal: Both sensors off Biopsy cassette (small cassette) 10:
  • Opposite corners are opaque (no holes 12), other corners are open (holes 12) (diagonal symmetry)
  • sensing systems which involve either a contact or non-contact type sensor, may be used to carry out the inventive concepts explained above.
  • many different types of optical sensing systems, magnetic sensing systems, barcode type systems or RFID type systems may be used to allow proper identification of the cassette and/or frame or other forms of information retrieval by the control of an automated embedding and/or processing system.
  • a frame member 80 is shown in Fig. 8 which includes an RFID element 81 embedded therein to allow appropriate embedded information to be relayed to the control system, for example, of an automated processing and/or embedding apparatus.
  • the information to be conveyed is also wide ranging and may include, for example, various diagnostic information, patient history, tissue sample information, or any other information helpful to the histologic or pathologic process.
  • Securement of Cassette Within Frame Member Referring to Figs. 1 and 8, a plurality of depressions 80, 82 and
  • a frame member 90 (Fig. 8) is used to carry cassette 10 and depressions 80, 82 and 84, 86 respectively receive projections or tabs 102, 104 and 106, 108. Additional depressions 110, 112 and 114, 116 are formed on the upper surfaces of flange 14 along the short sides of cassette body 16. These depressions respectively receive projections or tabs 120, 122 and 124, 126 formed within the frame member 80. The registered tabs and depressions securely maintain the cassette 10 within the frame member 80 during processing and embedding operations.
  • the tissue embedding process when performed manually with conventional cassettes, is subject to steps or technique that dislodge or reduce the entrapment of air bubbles in the paraffin (or embedding material) block. Air bubbles are detrimental because they can weaken the paraffin block and subsequent microtome sectioning can "break out” or cleave off the main paraffin body. This leaves an inconsistent edge or hole in the "ribbon" of sections which must flow successively from the section in the microtome process. This can result in an unsuccessful ribbon, and poor quality slides for diagnosis.
  • One way to lessen the presence of air bubbles is to tap or otherwise rapidly move the cassette assembly to remove air bubbles.
  • Figs. 1 and 2 holes 12, 20 in the flange 14 of the cassette 10 and under the writing surface of the frame are provided to allow air to escape. It will be appreciated that sensor holes 12 are therefore dual purpose. These holes 12, 20 should be large enough to allow escape of air and free of flash or burrs. Obstructions, such as ribs under the flange, may trap rising bubbles. Stiffening flanges 22 are located on the top side of the flange 14 to eliminate air entrapment.
  • Frame member 80 also includes an air escape recess or passage 83 on its inner surface.
  • Material Flow to Injection Mold Cassettes are also included.
  • the gate for filling the mold of the cassette body 16 and the lid 24 should have flow runners directly leading to the edges of the cassette sidewalls 26.
  • the cassette body 16 it is best to avoid having areas where the tissue will be blocked from the passage of fluids used to process the tissue.
  • the center 28a of the bottom wall 28 has some avoidable gate section, the majority of area is covered with flow holes 30.
  • solid flow ribs 24a as used for lid 24.
  • the mold pins for forming central holes 30a are configured with a teardrop shape to direct the flow of the cassette material out to the sidewalls 26.
  • Other mold pins for forming holes 30b are elongate in shape in a radial direction toward side walls 26. These shapes help direct cassette material efficiently away from the gate or fill location (e.g., central area 28a).
  • the transition area 29 (Fig. 3) from the bottom wall 28 to the ribs 40 which form the side walls 26 is radiused to reduce the flow restriction for molding.
  • Non-linear Side Walls Figs 1 and 2 also show that the sidewalls 26 are non-linear with respect to the frame side which also determines the cutting plane of the microtome.
  • the cassette side walls 26 could, for example, have a large radius along their length or undulate with respect to the frame sides.
  • the objective of this feature is to avoid having a parallel sidewall with respect to the frame side to increase microtome slicing efficiency. It will be appreciated that many configuration can fulfill this objective.
  • the lid 24 engages sidewall bumps or projections 50a, 50b or 50c in order to keep the lid 24 engaged with the cassette body 16 at the appropriate height against a tissue sample thereby keeping the tissue sample enclosed and immobilized in the cassette 10 during processing.
  • tissue samples such as biopsy samples 3 which can be as small as 1 mm .
  • the lid 24 should not come down all the way and crush the fragile biopsy sample. Stops 52 are incorporated into the cassette body 16 to keep the lid 24 from closing all the way down on the sample.
  • each stop could be located on the lid 24.
  • the height of each stop could be located on the lid 24.
  • the extremely thin cassette bottom wall 28 (preferred to be about
  • an orientation cassette 60 is used to orient special tissues (not shown) that must be sectioned "on edge".
  • Reference numerals corresponding to those from the first embodiment, but having prime marks in Figs. 6 and 7 refer to corresponding elements of structure.
  • Tissue such as skin, gal bladder, bladder, etc., needs to be oriented to allow the pathologist to view a full cross section of the biopsy. These samples can be quite small, and therefore need to be retained in a cassette with small holes like the biopsy cassette 10.
  • the orientation biopsy cassette 60 allows the histotechnologist to place the tissue in the proper orientation for sectioning at the time of gross-in.
  • This predetermined orientation will be maintained through the tissue processing and embedding procedures, thus maintaining the proper orientation to the cutting plane without having to remove the tissue and reorient it for sectioning in a paraffin mold.
  • the tissue is placed between upright posts 62 molded into the bottom wall 64 of the cassette 60.
  • These posts 62 have been arranged in configurations that take into account average thickness and lengths of the tissue to be used in the cassette 60.
  • the posts 62 are further arranged so that they are not directly in line with one another with respect to directions either parallel to or perpendicular to the sectioning blade path. Since the posts have more plastic material in them than the sidewall ribs 66, they could cause dulling of a portion of the microtome blade at an undesirable rate after repeated use.
  • the posts 62 are positioned to minimize the number of posts 62 cut in succession in the same blade pass.
  • the lid 70 of the orientation cassette 60 has corresponding clearance holes 72 for the upright posts 62. The tissue is held in place between the posts 62, and the lid 70 is depressed onto the posts 62 to secure the tissue against movement, just as in the other tissue trapping cassette configurations disclosed herein, or in the incorporated applications. There is a small clearance between the lid clearance holes 70 and the posts 62 to keep any tissue from escaping from the cassette 60. While the present invention has been illustrated by the description of the various embodiments thereof, and while the embodiments have been described in considerable detail, it is not intended to restrict or in any way limit the scope of the appended claims to such detail.

Abstract

Cette invention se rapporte à une cassette (10) qui est destinée à contenir un échantillon de tissu et qui comprend à cet effet un corps présentant une paroi inférieure (28) et plusieurs parois latérales (26) s'étendant vers le haut par rapport à la paroi inférieure, afin de définir un espace intérieur destiné à recevoir l'échantillon de tissu. Un couvercle (24) est conçu pour être reçu dans cet espace intérieur, et la cassette (10) est sectionnable dans un microtome. Des éléments de détection (12) sont associés au corps (16) ou au couvercle (24) de la cassette et ils sont conçus pour permettre à un système de détection automatisé de déterminer au moins une caractéristique de la cassette (10). Une bride (14) s'étend le long de parties supérieures d'au moins deux des parois latérales (26) et présente plusieurs trous (12, 20). D'autres fonctions sont incluses pour permettre une fabrication et une utilisation plus efficace de la cassette (10).
EP04794852A 2003-10-17 2004-10-12 Cassette pour manipuler et contenir des echantillons de tissus pendant des operations de traitement, d'implantation et de coupe au microtome, et procedes correspondant Ceased EP1682272A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51214703P 2003-10-17 2003-10-17
PCT/US2004/033604 WO2005037182A2 (fr) 2003-10-17 2004-10-12 Cassette pour manipuler et contenir des echantillons de tissus pendant des operations de traitement, d'implantation et de coupe au microtome, et procedes correspondant

Publications (2)

Publication Number Publication Date
EP1682272A2 EP1682272A2 (fr) 2006-07-26
EP1682272A4 true EP1682272A4 (fr) 2008-05-28

Family

ID=34465316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04794852A Ceased EP1682272A4 (fr) 2003-10-17 2004-10-12 Cassette pour manipuler et contenir des echantillons de tissus pendant des operations de traitement, d'implantation et de coupe au microtome, et procedes correspondant

Country Status (6)

Country Link
EP (1) EP1682272A4 (fr)
JP (1) JP4584259B2 (fr)
CN (1) CN1898022B (fr)
BR (1) BRPI0415516A (fr)
CA (2) CA2542323C (fr)
WO (1) WO2005037182A2 (fr)

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ES2837748T3 (es) * 2007-10-23 2021-07-01 Becton Dickinson Co Sistema de múltiples cámaras de contención de tejido para diagnóstico molecular e histológico
ES2660415T3 (es) 2007-10-23 2018-03-22 Becton, Dickinson And Company Kit cerrado para contención y estabilización de tejidos para diagnósticos moleculares e histopatológicos
JP5230209B2 (ja) * 2008-01-18 2013-07-10 悌二 竹崎 臨床側と病理検査側で共通使用する収納容器の構築形成体（枠状基体）を介して臨床側と病理検査側間での患者試料データの確実な伝達・連結をする病理組織試料用固定移送容器と病理組織試料用カセット。
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EP3401665A1 (fr) * 2017-05-12 2018-11-14 University College Dublin National University Of Ireland, Dublin Système et dispositif d'analyse d'une substance spécifique dans des échantillons liquides par microscopie optique
DE202018104076U1 (de) * 2018-03-15 2018-07-23 Leica Biosystems Nussloch Gmbh Halter für einen Stapel von Deckgläsern und Deckglasstapelvorratshalter
CN109916681A (zh) * 2019-03-10 2019-06-21 西安培华学院 一种数字病理切片的移动装置
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CN1898022A (zh) 2007-01-17
CA2542323A1 (fr) 2005-04-28
CA2542323C (fr) 2014-08-12
WO2005037182A2 (fr) 2005-04-28
CA2849506C (fr) 2016-05-10
BRPI0415516A (pt) 2006-12-26
JP2007508569A (ja) 2007-04-05
JP4584259B2 (ja) 2010-11-17
CA2849506A1 (fr) 2005-04-28
EP1682272A2 (fr) 2006-07-26
CN1898022B (zh) 2011-04-06
WO2005037182A3 (fr) 2006-01-12

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