(A-B) – Light micrographs of the testis. Toluidine blue staining; (A) Control. Normal germinal epithelium evidencing a lumen (*); bar = 40 μm. (B) Cr(V)-treated group. Remarkable degeneration and disorganization of the seminiferous tubules is noted. Some intraepithelial vacuoles are evidenced (*). The sloughing of necrotic cells are also seen; bar = 40 μm.