Figure 13.

(Table IV.) Idem [(the same as above)], in which [spermatids] of the young generation are in their second [(elongating)] stage of development (n2°). [Spermatocytes] are in their third stage [(late pachytene)] (s3°), and [spermatogonia] completely transformed into first stage [leptotene spermatocytes] (s1°), which are found inside the basal surface of [Sertoli cells]. 480/1. (This represents a stage IX–XI tubule [Perey, Clermont, and Leblond Amer J Anat (1961)]. Germ cells included would be: rare type A spermatogonial stem cells, type A differentiating spermatogonia, leptotene spermatocytes, pachytene spermatocytes, and elongating spermatids.)