Figure 2.

Percentage of tubules with TUNEL-positive cells for each stage of seminiferous epithelium, at 1, 2 and 3 days after injection in mice that received one dose of cyclophosphamide (150 mg/Kg p.o.). Values expressed as Mean ± SEM (N=3 for each endpoint, and control group). Asterisks indicate statistically significant differences from control (p<0.05). The differentiating spermatogonial cell types or preleptotene spermatocytes (Pl) present at each stage are indicated below the stage.