Abstract: A cell-spreading device may include a microchamber chip having a microchamber capable of enclosing and retaining a cell, a channel-forming frame united with the microchamber chip to form a channel on the microchamber, an inlet provided in the channel-forming frame to allow a cell suspension to flow into the channel, and an outlet provided in the channel-forming frame to allow the cell suspension, which has been allowed to flow into the channel through the inlet, to flow out from the channel. When an aperture of the microchamber is projected perpendicularly to a longitudinal width of the microchamber chip, the void ratio that is a ratio of the sum total of voids to the longitudinal width is not more than 5%, the void being a length of a portion where the projected aperture of the microchamber is not present against the longitudinal width.

Abstract: The assay device (10) comprises a micro flow path (76); a porous medium provided near the distal end portion (80) of the micro flow path (76); and a space (82) provided between the micro flow path (76) and the porous medium for controlling the flow rate of a fluid moving from the micro flow path (76) to the space (82). After a fluid moved along the micro flow path (76) based on a lateral flow is brought into contact with the porous medium beyond the space (82) and is absorbed to the porous medium, the fluid is divided by the space (82) so that the fluid stays in the micro flow path (76). With this structure, it is possible to perform solution exchange in the micro flow path without using an external device such as a pump.

Abstract: Disclosed is a detection method for detecting a specific cell in a sample containing multiple cells including the specific cell. Specifically disclosed is a detection method for detecting a specific cell in a sample containing multiple cells including the specific cell, which comprises the following steps (1) and (2): (1) retaining cells contained in the sample on a microarray chip which comprises multiple microchambers, wherein each of the microchambers can contain multiple cells; and (2) confirming the presence or absence of the specific cell in the cells retained on the microarray chip.

Abstract: A cell-spreading device may include a microchamber chip having a microchamber capable of enclosing and retaining a cell, a channel-forming frame united with the microchamber chip to form a channel on the microchamber, an inlet provided in the channel-forming frame to allow a cell suspension to flow into the channel, and an outlet provided in the channel-forming frame to allow the cell suspension, which has been allowed to flow into the channel through the inlet, to flow out from the channel. When an aperture of the microchamber is projected perpendicularly to a longitudinal width of the microchamber chip, the void ratio that is a ratio of the sum total of voids to the longitudinal width is not more than 5%, the void being a length of a portion where the projected aperture of the microchamber is not present against the longitudinal width.

Abstract: The assay device (10) comprises a micro flow path (76); a porous medium provided near the distal end portion (80) of the micro flow path (76); and a space (82) provided between the micro flow path (76) and the porous medium for controlling the flow rate of a fluid moving from the micro flow path (76) to the space (82). After a fluid moved along the micro flow path (76) based on a lateral flow is brought into contact with the porous medium beyond the space (82) and is absorbed to the porous medium, the fluid is divided by the space (82) so that the fluid stays in the micro flow path (76). With this structure, it is possible to perform solution exchange in the micro flow path without using an external device such as a pump.

Abstract: Provided is a micro chamber chip for cell expansion, with which the non-specific adsorption of cells onto a surface other than a micro chamber can be suppressed, and a rare cell from a substance that contains a large quantity of cells, such as a blood, can be stored, held and observed without a leakage of the rare cell. A micro chamber chip for cell expansion is provided with a micro chamber chip in which a micro chamber configured to store and hold one or more cells is formed on an upper surface of a substrate, wherein an upper surface of the micro chamber chip and an inner wall surface of the micro chamber are coated with a blocking agent that can suppress a non-specific adsorption of a cell on the upper surface.

Abstract: The present invention provides: genetically modified yeasts such as mutant yeasts having an ability to produce N-linked sugar chains of Man5GlcNAc2 and a decreased ability to produce O-linked sugar chains, mutant yeasts having an ability to produce N-linked sugar chains of Man5GlcNAc2 and further having an ability to produce N-linked sugar chains of GlcNAc1Man5GlcNAc2, and mutant yeasts having an increased ability to produce and secrete proteins and an ability to produce N-linked sugar chains of Man5GlcNAc2; and a method for producing glycoproteins using them.

Abstract: The present invention provides: genetically modified yeasts such as mutant yeasts having an ability to produce N-linked sugar chains of Man5GlcNAc2 and a decreased ability to produce O-linked sugar chains, mutant yeasts having an ability to produce N-linked sugar chains of Man5GlcNAc2 and further having an ability to produce N-linked sugar chains of GlcNAc1Man5GlcNAc2, and mutant yeasts having an increased ability to produce and secrete proteins and an ability to produce N-linked sugar chains of Man5GlcNAc2; and a method for producing glycoproteins using them.

Abstract: Disclosed is a detection method for detecting a specific cell in a sample containing multiple cells including the specific cell. Specifically disclosed is a detection method for detecting a specific cell in a sample containing multiple cells including the specific cell, which comprises the following steps (1) and (2): (1) retaining cells contained in the sample on a microarray chip which comprises multiple microchambers, wherein each of the microchambers can contain multiple cells; and (2) confirming the presence or absence of the specific cell in the cells retained on the microarray chip.