Figure 12.

An electron micrograph of a section from the testis of a rat of group II showing a primary spermatocyte (SP) with its nucleus (N2) showing clumps of a peripheral heterochromatin (arrow). Mature sperms with its head (S) and axoneme (curved arrow) are present abnormally near the primary spermatocyte. The spermatide cell (SD) appears with its rounded nucleus (N1) that is covered on the proximal part of its circumference with the acrosomal cap (crossed arrow). Note the presence of few disrupted mitochondria (arrow head) (TEM × 2500).