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SPERM SELECTION UNIT STRUCTURE, SPERM SCREENING DEVICE PROVIDED WITH SPERM SELECTION UNIT STRUCTURE, AND METHOD OF PREPARING SEMEN FOR FERTILIZATION
SPERM SELECTION UNIT STRUCTURE, SPERM SCREENING DEVICE PROVIDED WITH SPERM SELECTION UNIT STRUCTURE, AND METHOD OF PREPARING SEMEN FOR FERTILIZATION
A sperm selection unit structure for efficiently separating sperm having favorable motility includes: a storage part which stores semen acquired from an animal therein; a buffer solution flow passage which communicates with the storage part and in which a buffer solution flows in the direction toward the storage part as a laminar flow; and a swim-up passage which communicates with the storage part such that the sperm swim up in the buffer solution flow passage from the storage part, wherein a downstream part of the swim-up passage is formed of a flow passage having a wide width where the buffer solution flows as a slow flow while maintaining a laminar flow state of the buffer solution, and a downstream end portion of the flow passage is opened in a state where the downstream end portion faces a wall surface of the storage part.
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