Reagent cartridge for detection of cells

An apparatus includes a housing and an actuator. The housing, which defines a reagent volume that can receive a reagent container, can be removably coupled to a reaction chamber. A delivery portion ofthe housing defines a delivery path between the reagent volume and the reaction chamber when the housing is coupled to the reaction chamber. The delivery path includes a protrusion such that the delivery path has a discontinuous inner surface. The actuator can be moved to convey a reagent from the reagent container into the reaction chamber via the delivery path. 种设备包括壳体和致动器。壳体可以可移除地联接到反应室，壳体限定可以接收试剂容器的试剂体积。当壳体联接到反应室时，壳体的输送部分限定试剂体积与反应室之间的输送路径。输送路径包括突出部，使得输送路径具有不连续的内表面。可以移动致动器，以将试剂从试剂容器经由输送路径传送到反应室中。