adhering fat, washed with normal saline, weighed, and then used for estimation of lipid peroxidation and assay of superoxide dismutase (SOD) activity. A second set of animals (n = 6) from each group were injected intravenously 0.1 mL of 1% Chicago blue 6B dye through tail vein on day 6 of pregnancy. All the animals were sacrificed and the uterus was exposed to count the number of sites of implantation.