Figure 1: Comparison of catalase activity in (A) serum (B) and liver of groups of controls, diabetic, and diabetic rats fed with Co Q10 (10 mg/kg for 6 weeks). Co Q10 treatment considerably increased catalase activity compared diabetic group. * Represents a significant difference between diabetic group and control groups (P < 0.05);# represents a significant difference between diabetic rats received Co Q10 and diabetic group (P < 0.05). Values are means ± SEM for each group. Each bar represents at least six rats. Co Q10, Coenzyme Q10; DM; diabetes mellitus.