Figure 2.

(A-C) -Electron micrographs of the seminiferous epithelium in Cr(V)-treated group. Uranyl acetate and lead citrate staining; (A) Ultrastructural morphology of the basal portion of a seminiferous tubule exhibiting widening of intercellular spaces (*) and necrotic germ cells (arrows); Bar = 3 μm; (B) Portion of a degenerative symplast where several nuclei (N) are seen; Bar = 2 μm; (C) Abnormal aspect of a late giant spermatid evidencing the head and the neck pieces; N – nucleus; Bar = 1 μm.