Round spermatids are immature sperm cells which can be used for injection directly into the oocyte via ICSI. Usually this is the method of choice when there are no sperm present in the testis or epididymis. We offer a Hyper-osmotic Shrinkage Test (HYOS-test), that we developed at AIA, to identify and select round spermatids with intact membranes, for microinjection via ICSI (14). (Read full publication)
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