The activities of antioxidant factors, SOD (P < 0.01) and TAC (P < 0.01), in the serum of BLM-induced mice were significantly lower than that of the NC group, while CA administration was observed to increase both SOD (P < 0.01) and TAC (P < 0.01) levels (Figures 2(b) and 2(c)). This evidence concerns the gene SOD1 and Bloom syndrome.