A device for performing a cell study. The device comprises a plate having a plurality of wells, each configured for containing aqueous solution and having a well bottom with a plurality of picowells and a plurality of biosensors each configured for measuring at least one cell characteristic while be
A device for performing a cell study. The device comprises a plate having a plurality of wells, each configured for containing aqueous solution and having a well bottom with a plurality of picowells and a plurality of biosensors each configured for measuring at least one cell characteristic while being in contact with the aqueous solution in a respective the well. The position of each the biosensor in a respective the well is limited by at least one pin.
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1. A cell study device, comprising: (a) a unitary structure comprised of (i) a solid base;(ii) a cell holding area comprised of an array of picowells carried by the base, each of which picowells is sized and configured to accommodate and immobilize a single cell or a predetermined number of cells, a
1. A cell study device, comprising: (a) a unitary structure comprised of (i) a solid base;(ii) a cell holding area comprised of an array of picowells carried by the base, each of which picowells is sized and configured to accommodate and immobilize a single cell or a predetermined number of cells, and(iii) a wall substantially surrounding the base;(b) an array of biosensors which are configured to be at least partially insertable and removable from an upper surface of respective picowells; and(c) a support arrangement including at least one pin that prevents the biosensors from getting closer more than a fixed distance from the cells in the picowells, wherein said at least one pin is positioned to contact an area outside of said picowells when said biosensors reach said fixed distance. 2. A cell study device according to claim 1, including a plurality of cell holding areas that are in fluidic isolation from each other. 3. A cell study device according to claim 2, in which at least one barrier provides fluidic isolation between the cell holding areas. 4. A cell study device according to claim 1, including a movable cover for the unitary structure. 5. A cell study device according to claim 4, in which the movable cover is configured to fit on the top of the upwardly extending wall. 6. A cell study device according to claim 1, having the configuration of a standard microtitre plate. 7. A cell study device according to claim 6, in which the microtitre plate is a 6 well plate, a 12 well plate, a 24 well plate, a 48 well plate, or a 96 well plate. 8. A cell study device according to claim 1, having the configuration of a Petri dish. 9. A cell study device according to claim 1, in which the cell holding area is surrounded by a first barrier extending upwardly from the base as part of the unitary structure. 10. A cell study device according to claim 7, further including a second barrier on the base layer as part of the unitary structure surrounding the picowell array within the confines of the first barrier. 11. A cell study device according to claim 10, in which the second barrier is defined by a recess in the base in which the picowell array is located. 12. A cell study device according to claim 10, in which the second barrier is formed by an aperture in a layer attached to the base. 13. A cell study device according to claim 1, further including a fluid inlet for the cell holding area. 14. A cell study device according to claim 13, in which the top of the first barrier is configured as the fluid inlet. 15. A cell study device according to claim 1, in which the cell holding area is comprised of picowells having dimensions in the range of about 1 to about 500 micrometers. 16. A cell study device according to claim 1, in which the base is glass and the rest of the device is formed of a plastic material coupled together to form the unitary structure. 17. A cell study device according to claim 1, in which the cell holding area includes a chemical or biological coating. 18. A cell study device according to claim 1, in which the picowells form an embossed area on the base. 19. A cell study device according to claim 1, in which the picowell array is comprised in a separate component attached to the base to become part of the unitary structure. 20. A cell study device according to claim 1, in which the cell holding area includes at least one orientation mark visible under microscopy. 21. A cell study device according to claim 1, in which different ones of the cell holders are adapted for holding different types of cells or cell spheroids. 22. A cell study device according to claim 1, in which the biosensors are supported at fixed positions above the cells in the picowells by said at least one pin. 23. A cell study device according to claim 22, in which said at least one pin extends substantially perpendicularly to an area outside of said picowells and is part of the unitary structure. 24. A cell study device according to claim 22, in which said at least one pin is attached to the front of the biosensors and extends substantially perpendicularly to an area outside of the picowells. 25. A cell study device according to claim 1, wherein said cell holding area comprises at least one well and wherein said picowells are positioned within said well. 26. A cell study device according to claim 1, wherein the cell holding area, the first barrier and the support arrangement are attached together as a single unit. 27. A cell study device according to claim 1, wherein the speed of insertion and withdrawal of the biosensors from the respective picowells is adjusted by a fluid control mechanism associated with said respective picowells. 28. A cell study device according to claim 27, wherein said fluid control mechanism comprises a plurality of capillaries. 29. A cell study device according to claim 1, wherein said picowells comprise non-adhesive picowells configured to prevent adherence of cells. 30. A cell study device according to claim 1, wherein said picowells are formed of hydrogel. 31. A cell study device according to claim 17, wherein said biological coating comprises hydrogel. 32. A cell study device according to claim 1, wherein said picowells are positioned in a well having a depth smaller than 500 micrometers, and wherein said at least one pin defines the minimum distance between the bottom of said well and said biosensors which are configured to be at least partially insertable and removable from said well. 33. A cell study device, comprising: (a) a unitary structure comprised of (i) a solid base;(ii) a cell holding area comprised of an array of picowells carried by the base, each of which picowells is sized and configured to accommodate and immobilize a single cell or a predetermined number of cells, and(iii) a wall substantially surrounding the base;(b) a support arrangement including at least two pins positioned outside of said picowells, wherein said at least two pins prevents an object having dimensions larger than the distance between said pins from getting closer more than a fixed distance from the cells in the picowells.
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