Dynamics of Spermatogenesis and Change in Testicular Morphology under ‘Mating’ and ‘Non-Mating’ Conditions in Medaka (Oryzias latipes)

Abstract excerpt

). During these conditions, an efferent duct expands and a histological unit of spermatogenesis, the lobule, increases its number under 'non-mating' conditions. Based on BrdU labeling experiments, lower mitotic activity occurs in gonial cells under 'non-mating' conditions, which is consistent with the reduced number of germ cell cysts. Interestingly, the total number of type A spermatogonia was maintained,...

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