Figure 10.

(Table IV.) Portion of a cross-cut section of a seminiferous tubule where [spermatids] of the older generation are in the third [(condensing)] stage of development and the younger is at the beginning of the first [(round)] stage. 2nd g (g2°)—second stage [intermediate (In) spermatogonia]; 2nd s (s2°)—second stage [early pachytene spermatocytes]; 1st n (n1°)—[spermatids] in their first [(round)] developmental stage.[Spermatids] in their third [(condensing)] stage are arranged in a sheaf-like pattern around [Sertoli cells]. 480/1. (This represents a stage I tubule [Perey, Clermont, and Leblond Amer J Anat (1961)]. Germ cells included would be: rare type A spermatogonial stem cells, type A undifferentiated and intermediate (In) spermatogonia, pachytene spermatocytes, and round and condensing spermatids.)