The objective of this study is to elicit the destructive effect of lead on the tissues of liver and kidney of mice and if vitamin C is capable of repairing the damage caused by lead. In this study, 40 male mice were used and divided into three groups as: Control group which consists of 16 mice; 8 of them were injected intraperitoneally with (0.9 % N.S.) for 15 days daily then they were sacrificed and the remainder 8 mice were injected intraperitoneally with (0.9 % N.S.) for additional 15 days daily then they were sacrificed, First treated group (T1 group) which consists of 8 mice only; they were injected intraperitoneally with (80 mg/kg) lead acetates then with (400 mg/kg) vitamin C after one hour of lead acetates injection for 15 days daily then they were sacrificed, Second treated group(T2 group) which consists of 16 mice; they were injected intraperitoneally with (80 mg/kg) lead acetates for 15 days daily then 8 of them were sacrificed and called as (T2a) and the remainder 8 mice were injected with (400 mg/kg) vitamin C for additional 15 days daily and called as (T2b). Histologically, the kidneys of the lead acetates treated group indicated undefined epithelial cell lining and also the presence of giant-like cells. When vitamin C offered, it decreased the damage that caused by lead where the kidneys indicated the

The role of gallic acid was studied to alleviating some biochemical parameters alterations in hyper cholesterolemia in rats. For this purpose 24 sexually adult male rats were divided randomly in to 4 groups (6 rats each). The experiment was conducted at the animal house of the Veterinary Medicine College-University of Basrah, the control group, rats were injected intraperitoneally (I.P.) with 0.9 % normal saline (N.S)and were supply with the stander ration. The first treated group were injected intraperitoneally (I.P.) with 100 mg/ kg gallic acid dissolve in 0.5 ml distilled water daily and were supply with the stander ration. The second treated group were supplied with the stander ration in addition to 1.5% cholesterol of the stander ration. The third treated group were supplied with standard ration in addition to 1.5% cholesterol, and injected intraperitoneally (I.P.) after one hour with 100 mg/kg gallic acid dissolved in 0.5 ml distilled water