CAT and hereditary elliptocytosis: SOD and CAT activities were significantly higher in estrogen treated groups (SOD in U/mg protein: LE = 33.65 ± 5.54; HE = 32.10 ± 6.80; CAT in pmol/mg protein: 12.5 ± 2.0; 12.8 ± 2.9) as compared to the Ovx group (SOD: 22.24 ± 3.00; CAT: 8.9 ± 1.4), and there was no difference between HE and LE groups (Figures 2(a) and 2(b)).