Ricoh Company, Ltd.

Waka Lin

Shusaku Shiomoto

Manabu Seo

Satoshi Izumi

Aino Hasegawa

Ikuo Katoh

Natsuko Hemmi

A method of in vitro cellular assay includes measuring an electrical activity of at least two cell populations in a plurality of cell populations that are disposed to be spaced apart from each other and connected to each other via a neurite, in which at least one of the at least two cell populations for which the electrical activity is measured is a cell population including at least one kind of neural cell, and the at least two cell populations each exhibit different electrical activity properties at a point when the electrical activity is measured.

Method of in vitro cellular assay, cell circuit board, and method of manufacturing cell circuit board

Provided is a three-dimensional tissue, including: a first cellular region including cells of a first type; and a second cellular region including cells of a second type different from the first type, wherein the cells of the first type are cells that emit light by chemiluminescence, bioluminescence, or fluorescence in response to an external stimulus.

Three-dimensional tissue

Provided is discharging device including liquid droplet discharging unit configured to discharge liquid droplet containing a light-emitting particle that undergoes luminescence in response to irradiation of light, light irradiating unit configured to irradiate liquid droplet discharged by liquid droplet discharging unit with the light, light detecting unit configured to detect luminescence by light-emitting particle contained in liquid droplet in response to irradiation of the light emitted by light irradiating unit, and average particle number calculating unit configured to determine presence/absence of light-emitting particle in liquid droplet based on whether light detecting unit has detected luminescence by light-emitting particle, and calculate average particle number, which is average, among all liquid droplets discharged, in number of light-emitting particles contained per liquid droplet, based on ratio of liquid droplets containing no light-emitting particle relative to all the liquid droplets discharged, the ratio being calculated based on the presence/absence of light-emitting particle.

Growing community of inventors

Tokyo, Japan

Waka Lin