The number of Ad spermatogonia in pre-operative testicular biopsy (prior to 9 months of age) seems to be associated with future sperm count as all boys with Ad spermatogonia at orchidopexy ...

A local autocrine axis exists in the testes that regulates spermatogenesis. In this Review, Cheng and Mruk review findings from the past decade that support the presence and reveal the importance ...

This dual centrosome duplication in male mouse meiosis allows the formation of four spermatids per each spermatogonia that enters meiosis, each one with two centrioles (Manandhar et al, 2005).