Spermatogenesis in mature and regressed testes of the vole (Microtus agrestis).


Eight stages of spermatogenesis, each with a characteristic frequency and germ cell association could be recognized in the vole. There was no difference between laboratory bred and field animals in the frequency of the stages. Counts of the different types of germ cell showed that there was considerable cell loss during spermatogonial mitotic and… (More)