In the thyroid and liver homogenates, the MDA level was significantly elevated, whereas the SOD activity was significantly lower in groups 3 and 4. GSHPx activity was also significantly decreased in all fluoride-treated groups compared with the control group. In groups 3 and 4 the kidney homogenates had a
significantly elevated MDA level and a lowered GSH-Px activity. The SOD
activity was significantly decreased in all fluoride-treated groups (Table 2)