Figure 9: Histological structure of rat testis using ALP staining. Reaction to ALP staining (black arrows) was seen rarely in control group. Lead, combined lead and WSE (100 mg/kg/day), and combined lead and vitamin E groups showed progressively more severe reactivity to ALP staining. On the contrary, combined lead and WSE (200 mg/kg/day), WSE (100 mg/kg/day) and WSE (200 mg/kg/day) groups showed decreased ALP reactivity. White arrows show ALP reactivity inside cytoplasm of Leydig cells. Values in parentheses are shown in mg/kg/day.