Fig. 3

Immunolocalization of the enzyme NADPH cytochrome P450 reductase in the vaginal epithelium and testes of Spix cavy. a immunoreactivity in cells (arrow) of the epithelium (e) and connective tissue (ct) at diestrus. Bar = 20 μm. b immunoreactivity in the basal cells of the epithelium (b) and of the connective tissue (ct); (c) cornified surface cells of the epithelium at proestrus. Bar = 10 μm c immunoreactivity in cells (arrows) of the epithelium and connective tissue (ct); (c) cornified cells of the epithelium at metaestrus. d immunoreactivity in cells (arrow) of the connective tissue (ct) and basal cells (b) of the epithelium; cornified cells of the epithelium at estrus e no immunoreactivity in cells of the epithelium (e) or connective tissue (ct). Negative control. f immunoreactivity in Leydig cells of the testicle (arrow). Spermatozoa (arrowhead). Positive control. Bars = 20 μm