Abstract: The first aspect of the present invention provides a migration ability evaluation method comprising: a trajectory generation step of generating a trajectory of movement of an object being observed of a living body on the basis of a plurality of images of the object being observed acquired by capturing observation images of the object being observed multiple times in a time-series manner; a migration ability calculation step of calculating a migration ability measure indicating the degree of migration of the object being observed in a certain direction on the basis of the trajectory of movement of the object being observed; and a migration ability evaluation step of evaluating whether or not the object being observed satisfies a predetermined condition on the basis of the migration ability measure of the object being observed.

Abstract: A fluid device includes a substrate and a gas-liquid separating filter, the substrate has a flow path through which a solution flows, a reservoir, in which the solution is accommodated, connected to the flow path, an injection hole configured to connect the reservoir to the outside, and an air introduction hole branched off from the injection hole and connected to the outside, and the gas-liquid separating filter is disposed in a path of the air introduction hole, allows passage of a gas flowing through the air introduction hole, and prevents passage of a liquid flowing through the air introduction hole.

Abstract: A cell tracking method for performing cell tracking on the basis of a plurality of cell images captured in time series, including an extraction process of extracting a tracking region corresponding to the cell for each cell images; a tracking process of calculating a change information in a position of the extracted tracking region and tracking the cell on the basis of the change information; a determination process of determining whether or not the cell as a tracking target is in a cell division state on the basis of the cell image; and an analysis process of analyzing a movement state of the cell on the basis of the change information from which the change information in a period of the cell division state is excluded when the cell is determined to be in the cell division state in the determination process.

Abstract: An object of the present invention is to provide a fluidic device in which a solution can be introduced into a flow path and be quantified while preventing air bubbles from being generated. A pair of substrates are provided which are stacked in a thickness direction and in which one substrate includes a flow path constituted by being covered by another substrate. The flow path includes a quantification part that is able to quantify a solution to a predetermined amount. The quantification part includes: a pair of merging/branching portions each of which is surrounded by a contour that matches each of line segments connecting apex positions of an equilateral triangle in a view of the thickness direction or a contour parallel to each of the line segments and at which merging or branching of the solution is performed; and a connection portion that connects the pair of merging/branching portions via one of the apex positions of the equilateral triangle of the merging/branching portion.

Abstract: An object of the present invention is to provide a flow path device capable of suppressing an occurrence of air bubbles when a solution is introduced into a flow path. A fluidic device has a pair of substrates which are stacked in a thickness direction, one substrate including a flow path formed by being covered with the other substrate. The flow path includes a merging/branching portion which is surrounded by a contour which is configured to match each line segment connecting together apex positions of an equilateral triangle as viewed in the thickness direction or a contour parallel to each line segment and in which solution merges or branches. A valve which is configured to regulate flow of a fluid in the flow path is provided in at least two of the apex positions.

Abstract: A fluid device includes a substrate and a gas-liquid separating filter, the substrate has a flow path through which a solution flows, a reservoir, in which the solution is accommodated, connected to the flow path, an injection hole configured to connect the reservoir to the outside, and an air introduction hole branched off from the injection hole and connected to the outside, and the gas-liquid separating filter is disposed in a path of the air introduction hole, allows passage of a gas flowing through the air introduction hole, and prevents passage of a liquid flowing through the air introduction hole.

Abstract: A fluid device includes a base material including a flow path through which a solution flows and a first facing surface, a treatment substrate including a second facing surface which faces the first facing surface and in which a treatment unit which comes in contact with the solution and treats the solution is provided, and a sealing portion sandwiched between the first facing surface and the second facing surface, in which a treatment space surrounding the treatment unit with the sealing portion when viewed from a plate thickness direction and connected to the flow path is provided between the treatment substrate and the base material.