WO2011010721A1 - 細胞電位測定容器及びその製造方法 - Google Patents
細胞電位測定容器及びその製造方法 Download PDFInfo
- Publication number
- WO2011010721A1 WO2011010721A1 PCT/JP2010/062422 JP2010062422W WO2011010721A1 WO 2011010721 A1 WO2011010721 A1 WO 2011010721A1 JP 2010062422 W JP2010062422 W JP 2010062422W WO 2011010721 A1 WO2011010721 A1 WO 2011010721A1
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- WIPO (PCT)
- Prior art keywords
- container
- cell potential
- measurement
- container body
- substrate
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 61
- 239000000758 substrate Substances 0.000 claims abstract description 50
- 238000005304 joining Methods 0.000 claims description 18
- 239000002390 adhesive tape Substances 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 9
- 229940079593 drug Drugs 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000001963 growth medium Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 102000004310 Ion Channels Human genes 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 208000018452 Torsade de pointes Diseases 0.000 description 2
- 208000002363 Torsades de Pointes Diseases 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012777 electrically insulating material Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 208000004731 long QT syndrome Diseases 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 239000002547 new drug Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 206010042434 Sudden death Diseases 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 230000006793 arrhythmia Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940000406 drug candidate Drugs 0.000 description 1
- 238000009509 drug development Methods 0.000 description 1
- 238000007877 drug screening Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 206010042772 syncope Diseases 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/483—Physical analysis of biological material
- G01N33/487—Physical analysis of biological material of liquid biological material
- G01N33/48707—Physical analysis of biological material of liquid biological material by electrical means
- G01N33/48728—Investigating individual cells, e.g. by patch clamp, voltage clamp
Definitions
- the present invention relates to a cell potential measuring container for measuring a cell potential mounted on a potential measuring device and a method for manufacturing the same.
- toxicity In modern new drug development, it is required to determine early on the toxicity caused by drugs.
- One type of toxicity is drug-induced (acquired) QT prolongation syndrome, a disease that causes severe arrhythmias in patients.
- Non-Patent Document a measurement method for observing the influence of the drug on the activity of the ion channel from the change in the potential of the cell in the culture medium to which the drug is administered has been disclosed (Non-Patent Document). 1).
- This measurement method is performed by mounting a cell potential measuring container on a potential measuring device.
- the cell potential measurement container includes a plurality of wells that contain cells together with a culture solution, and a measurement electrode and a reference electrode are disposed on the bottom of each well.
- the baseline of the measurement data as shown in FIG. 5B may swell, and it may be difficult to obtain an accurate measurement result. there were.
- An object of the present invention is to provide a cell potential measurement container in which baseline undulation does not occur and accurate measurement results can be easily obtained in cell potential measurement using a cell potential measurement container.
- the present invention includes a container body part and an electrode substrate, wherein the electrode substrate is joined to the lower end of the container body part to form a plurality of wells, and is mounted on a potential measuring device.
- a container for measuring a cell potential wherein the container body portion includes a plurality of cylindrical portions having an upper end and a lower end opened, and a joining margin at the lower end, and the electrode substrate includes a substrate body, A plurality of measurement electrodes and a plurality of reference electrodes are disposed on one side of the substrate body, and the bonding margin is formed on a surface of the substrate body on which the plurality of measurement electrodes and the plurality of reference electrodes are disposed.
- a cell potential measuring container and a method for manufacturing the cell potential measuring container characterized in that the container body part is joined with a double-sided tape at a location.
- the cell potential measurement container of the present invention is a disposable part used in a system for measuring cell potential changes for a plurality of novel drug candidate compounds in each well.
- the cell potential measuring container of the present invention is used by being mounted on a dedicated potential measuring device (not shown).
- the configuration has a plurality of wells.
- the plurality of wells are formed by bonding an electrode substrate to the lower end of the container body. That is, the container body is the side wall of each well, and the electrode substrate is the bottom of each well.
- the formed well is liquid-tight to the extent that it can accommodate a medium (usually a culture medium) used for measurement.
- a measurement electrode and a reference electrode are provided on the bottom surface of each well. Thereby, the potential of the cell can be measured in each well.
- the term “cell” should be interpreted as including not only one cell but also a cell mass (spheroid) in which a plurality of cells are aggregated.
- the cell potential measuring container of the present invention is disposable as described above. Therefore, in order to make the product inexpensive, it is desirable that at least the container body is made of resin.
- the resin is not particularly limited in the present invention as long as the container body can be molded and is electrically insulating. If the specific example of resin is given, a polypropylene, a polystyrene, polyester, a polycarbonate, etc. will be mentioned, for example. In particular, from the viewpoint of low material cost, high transparency, and good appearance, the resin is preferably polystyrene.
- the manufacturing method of the container body part is not necessarily limited as long as the container body part can be easily manufactured. However, considering the complicated structure of the container body part, it is usually manufactured by injection molding. It is desirable to do.
- the container body is provided with a cylindrical portion that becomes a side wall of each well and a joining margin.
- the upper and lower ends of the cylindrical part are open.
- the upper end is opened to accommodate cells and culture medium at the time of measurement, and the lower end is opened to make an electrode substrate described later a bottom surface.
- the shape of the cylindrical portion is not particularly limited in the present invention, but is preferably a cylindrical shape from the viewpoint of easy manufacture.
- the joining margin is arranged at the lower end of the container body.
- the joining margin not only serves as a location for joining with a double-sided tape described later, but also serves to hold a plurality of cylindrical portions. In order to increase the bonding strength of the double-sided tape, it is desirable that all the portions other than the lower end of the cylindrical portion be bonded on the lower surface of the container body portion.
- the present invention is not necessarily limited by the area of the joint.
- the electrode substrate includes a substrate body, and a plurality of measurement electrodes and a plurality of reference electrodes are disposed on one side of the substrate body.
- the substrate body is made of a so-called electrically insulating material.
- the material include polypropylene, polystyrene, polyester, fluororesin, polycarbonate, acrylic resin, glass composite including paper phenol, paper epoxy, glass epoxy, and alumina, but the measurement electrode and reference electrode can be easily constructed.
- glass epoxy is often selected from the viewpoint of high conductivity, mechanical strength, and low cost.
- the present invention is not limited to these substrate body materials.
- the measurement electrode is an electrode that contacts the cell and measures the activity of the ion channel of the cell as a potential.
- the reference electrode contacts the medium used for the measurement (usually the culture solution) and measures the so-called reference potential. Electrode.
- the measurement electrode and the reference electrode are arranged at positions such that one each exists on the bottom surface of each well when the electrode substrate is joined to the container body to form a well. Of course, the measurement electrode and the reference electrode are not electrically connected even at the bottom of each well.
- the material for the measurement electrode and the reference electrode include gold, silver, carbon, platinum, ruthenium oxide, and palladium. In particular, gold is preferably used from the viewpoint of high electrical conductivity, but the present invention is not limited to these electrode materials.
- the measurement electrode and the reference electrode can be appropriately constructed by a method such as a screen printing method, an inkjet method, sputtering, or vapor deposition. Therefore, the present invention is not limited by these electrode construction methods.
- the container body and the electrode substrate are joined with a double-sided tape. Joining is performed at the joining margin in the container body. The bonding is performed so that the double-sided tape does not exist at least at the lower end of the cylindrical portion of the container body. That is, the shape of the double-sided tape is adjusted according to the shape of the joining margin of the container body.
- the type of the double-sided tape is not particularly limited as long as the bonding strength between the container body and the electrode substrate is sufficient and has electrical insulation, water resistance (water repellency) and chemical resistance. is not.
- a double-sided tape such as a Nichiban double-sided tape (manufactured by Nichiban Co., Ltd.) or a structural bonding tape (manufactured by Sumitomo 3M Limited) can be suitably used. Further, after joining one side of the double-sided tape to the joining margin of the container body, the other side of the double-sided tape may be joined to the electrode substrate, or vice versa. Furthermore, in order to perform bonding accurately, for example, it is desirable to provide holes for positioning in the container body, the electrode substrate, and the double-sided tape, respectively, but the present invention is not necessarily limited to the presence or absence of the holes for positioning. Is not to be done. The use of this double-sided tape surprisingly eliminated the baseline undulations in cell potential measurements.
- the baseline of measurement data does not swell, and it is easy to obtain accurate measurement results.
- FIG. 6 is a cross-sectional view (cross section taken along the line X-X ′ in FIG. 4) in one well of the cell potential measuring container of the present invention. It is a top view in one well with a cell potential measuring container of the present invention.
- A) is a figure which shows the result of having measured the potential of the cell using the cell potential measuring container of the present invention.
- (B) is a figure which shows the result of having measured the electric potential of the cell using the cell electric potential measurement container adhere
- FIG. 1 is an exploded perspective view of a cell potential measuring container of the present invention.
- the cell potential measuring container of the present invention is mainly composed of a container body 1, an electrode substrate 2, and a double-sided tape 3.
- the resin container body portion 1 includes a plurality of cylindrical cylindrical portions 11 having an upper end and a lower end opened, and a joining margin 12. The structure of the lumen of each cylindrical portion 11 will be described later.
- Each cylindrical portion 11 constitutes a side wall of the well.
- the joining margin 12 is disposed at the lower end of the container body 1.
- the joining margin 12 will be described with reference to FIG.
- FIG. 2 is a partial bottom view (for 9 wells) of the container body 1.
- the slanted line is the joining margin 12 and is also a place to be joined to the double-sided tape 3 described later.
- the electrode substrate 2 constitutes the bottom surface of the well.
- the electrode substrate 2 includes a substrate body 21 made of an electrically insulating material, and a plurality of measurement electrodes 22 and reference electrodes 23 are disposed on the electrode substrate 21.
- the measurement electrode 22 on the electrode substrate 2 in FIG. 1 is disposed at substantially the center of the C-shaped reference electrode 23. Since the measurement electrode 22 has a fine structure that is difficult to understand in FIG. 1, the details will be described with reference to FIGS. 3 and 4. All the measurement electrodes 22 and the reference electrodes 23 are lead to the connectors 25 arranged in a line on one side of the electrode substrate by independent lead wires 24.
- the connector 25 is also disposed on the back surface of the electrode substrate 2 (the surface on which the measurement electrode 22 and the reference electrode 23 are not disposed).
- the connector 25 on the back surface of the electrode substrate 2 is electrically connected to the dedicated potential measuring device. Allows measurement of cell potential.
- the shape of the double-sided tape 3 is adjusted according to the shape of the joining margin 12 of the container body 1. That is, the part corresponding to the lower end opening of the cylindrical part 11 of the container body part 1 of the double-sided tape 3 is cut out. Thereby, the electrode substrate 2 is exposed as the bottom surface of the well.
- FIG. 3 is a cross-sectional view of one well. The measurement unit 111, the measurement hole 112, and the holding unit 113 in FIG. 3 will be described later because it is easier to understand with reference to FIG.
- FIG. 4 is a preferred embodiment of the cell potential measuring container of the present invention, and is a top view of one well 4.
- the well 4 has the cylindrical portion 11 of the container body portion 1 as a side wall and the electrode substrate 2 as a bottom surface.
- a measurement electrode 22 and a reference electrode 23 are provided on the bottom surface of each well 4.
- the cylindrical portion 11 serving as the side wall of the well 4 is provided with a measuring portion 111 having a circular measuring hole 112 and four holding means 113.
- the measurement electrode 22 having a fine structure is exposed.
- the cell placed in the measurement unit 111 can move to the measurement hole 112 due to its own weight, and can come into contact with the measurement electrode 22 exposed in the measurement hole 112.
- the reference electrode 23 is exposed on the outer periphery of the measurement unit 112 on the bottom surface of the well 4.
- FIG. 5 (a) shows the results of measuring the potential (baseline) using the cell potential measuring container of the present invention (using a structural bonding tape (manufactured by Sumitomo 3M) as the double-sided tape 3).
- FIG. 5B shows the result of measuring the potential (baseline) using a cell potential measuring container adhered with a liquid adhesive Loctite 401 (Henkel) instead of the double-sided tape 3.
- the results of the cell potential measurement container bonded with the liquid adhesive showed undulations in the baseline, whereas the undulation disappeared brilliantly in the results using the cell potential measurement container of the present invention.
- the method of measuring the cell potential using the cell potential measuring container of the present invention can almost refer to the method using the conventional cell potential measuring container.
- the cell potential measurement container of the present invention is an embodiment including the measurement unit 111 as shown in FIGS. 3 and 4, the point that the cells are placed on the measurement unit 111 is different from the conventional method.
- the cell placed in the measurement unit 111 can move to the measurement hole 112 due to the reduced diameter structure of the measurement unit 111 and the weight of the cell, and can contact the measurement electrode 22 exposed in the measurement hole 112.
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Abstract
Description
11 筒状部
111 測定部
112 測定孔
113 保持手段
12 接合しろ
2 電極基板
21 基板本体
22 測定電極
23 参照電極
24 リード線
25 コネクタ
3 両面テープ
4 ウェル
Claims (2)
- 容器胴体部及び電極基板を含み、前記容器胴体部の下端に前記電極基板を接合して複数のウェルを形成してなり、電位測定装置に搭載して細胞の電位を測定するための容器であって、
前記容器胴体部は、
上端及び下端が開口した複数の筒状部と、
下端に接合しろを備え、
前記電極基板は、
基板本体を備え、前記基板本体の片面に複数の測定電極及び複数の参照電極が配設されてなり、
前記基板本体における前記複数の測定電極及び前記複数の参照電極が配設された面上に、前記接合しろの箇所で、前記容器胴体部を両面テープにより接合した
ことを特徴とする細胞電位測定容器。 - 容器胴体部及び電極基板を含み、前記容器胴体部の下端に前記電極基板を接合して複数のウェルを形成してなり、電位測定装置に搭載して細胞の電位を測定するための容器であって、
前記容器胴体部は、
上端及び下端が開口した複数の筒状部と、
下端に接合しろを備え、
前記電極基板は、
基板本体を備え、前記基板本体の片面に複数の測定電極及び複数の参照電極が配設されてなり、
前記基板本体における前記複数の測定電極及び前記複数の参照電極が配設された面上に、前記接合しろの箇所で、前記容器胴体部を両面テープにより接合する
ことを特徴とする細胞電位測定容器の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/386,583 US20120119762A1 (en) | 2009-07-24 | 2010-07-23 | Container for Measuring Cell Potential and Method for Producing Same |
EP10802341A EP2458373A1 (en) | 2009-07-24 | 2010-07-23 | Container for measuring cell potential and method for producing same |
JP2011523707A JPWO2011010721A1 (ja) | 2009-07-24 | 2010-07-23 | 細胞電位測定容器及びその製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009173016 | 2009-07-24 | ||
JP2009-173016 | 2009-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011010721A1 true WO2011010721A1 (ja) | 2011-01-27 |
Family
ID=43499193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/062422 WO2011010721A1 (ja) | 2009-07-24 | 2010-07-23 | 細胞電位測定容器及びその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120119762A1 (ja) |
EP (1) | EP2458373A1 (ja) |
JP (1) | JPWO2011010721A1 (ja) |
WO (1) | WO2011010721A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012200225A (ja) * | 2011-03-26 | 2012-10-22 | Nipro Corp | 細胞電位測定容器遠心分離補助具及び遠心分離方法 |
WO2021095393A1 (ja) | 2019-11-14 | 2021-05-20 | Nok株式会社 | 細胞外電位測定装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5761028B2 (ja) * | 2009-12-01 | 2015-08-12 | ニプロ株式会社 | 細胞電位測定容器及びその製造方法 |
Citations (3)
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JP2004534226A (ja) * | 2001-06-29 | 2004-11-11 | メソ スケイル テクノロジーズ,エルエルシー | 発光試験測定用のアッセイプレート、リーダシステム及び方法 |
WO2005001018A1 (ja) * | 2003-06-27 | 2005-01-06 | Matsushita Electric Industrial Co., Ltd. | 薬理測定装置およびシステム並びにそれに用いるウェル容器 |
WO2009038079A1 (ja) * | 2007-09-18 | 2009-03-26 | Biotec Co., Ltd. | 細胞測定容器、細胞外電位測定方法、薬品検査方法 |
-
2010
- 2010-07-23 WO PCT/JP2010/062422 patent/WO2011010721A1/ja active Application Filing
- 2010-07-23 US US13/386,583 patent/US20120119762A1/en not_active Abandoned
- 2010-07-23 EP EP10802341A patent/EP2458373A1/en not_active Withdrawn
- 2010-07-23 JP JP2011523707A patent/JPWO2011010721A1/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004534226A (ja) * | 2001-06-29 | 2004-11-11 | メソ スケイル テクノロジーズ,エルエルシー | 発光試験測定用のアッセイプレート、リーダシステム及び方法 |
WO2005001018A1 (ja) * | 2003-06-27 | 2005-01-06 | Matsushita Electric Industrial Co., Ltd. | 薬理測定装置およびシステム並びにそれに用いるウェル容器 |
WO2009038079A1 (ja) * | 2007-09-18 | 2009-03-26 | Biotec Co., Ltd. | 細胞測定容器、細胞外電位測定方法、薬品検査方法 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012200225A (ja) * | 2011-03-26 | 2012-10-22 | Nipro Corp | 細胞電位測定容器遠心分離補助具及び遠心分離方法 |
WO2021095393A1 (ja) | 2019-11-14 | 2021-05-20 | Nok株式会社 | 細胞外電位測定装置 |
US11946847B2 (en) | 2019-11-14 | 2024-04-02 | Nok Corporation | Extracellular potential measurement device |
Also Published As
Publication number | Publication date |
---|---|
JPWO2011010721A1 (ja) | 2013-01-07 |
US20120119762A1 (en) | 2012-05-17 |
EP2458373A1 (en) | 2012-05-30 |
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