Abstract: A cell accommodating chip capable of accommodating a plurality of cells includes a substrate composed of a light-transmitting material, and a plurality of wells on at least one of main faces of the substrate, the plurality of wells being capable of accommodating cells. A surface of the cell accommodating chip including the plurality of wells has a low cell adhesion property, and affinity to a specific binding material having affinity to a produced substance produced by a cell accommodated in one of the wells and/or a released substance released by the cell.

Abstract: A cell accommodating chip is adapted for use in a screening apparatus for searching for a predetermined cell based on optical information emitted from a substance on the cell accommodating chip and selectively collecting the cell searched for. The cell accommodating chip includes a substrate composed of a light-transmitting material, and a plurality of wells capable of accommodating cells, the plurality of wells being provided on at least one of main faces of the substrate. A surface of the cell accommodating chip having the plurality of wells is coated with a specific polymer having a crosslinked structure.

Abstract: A screening apparatus for searching for a predetermined microparticle based on optical information emitted from microparticles to selectively pick up the microparticle searched for includes a measurement chip that is made of a light permeable material, the measurement chip having a well formed therein that retains a liquid including at least one microparticle, a measuring section that is configured to acquire optical information emitted by the microparticles retained in the measurement chip, an analyzing section that is configured to analyze the optical information to extract optical information associated with the microparticles retained in the well, a liquid retaining section provided on the measurement chip, a draining section that is configured to drain a liquid retained in the liquid retaining section, an introducing section that introduces a liquid into the liquid retained section, and a liquid level controlling section that controls a liquid level of the liquid retaining section.