Endocrine Abstracts

In vertebrates, ARs have been detected in spermatogonia and also fetal gonocytes, confirming the importance of testosterone for the initial process of spermatogenesis. During seasonal spermatogenesis of adult bullfrogs (Lithobates catesbeianus), primordial germ (PG) cells show testosterone immunoexpression in winter; however, a weak or none testosterone immunoexpression was detected in summer. With the aim to confirm the role of testosterone in these cells, the immunogold loca...