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Determination of SOD (a), POD (b) and CAT (c) activities in Jin A (left), Yamian A (right) and their maintainers Jin B, Yamian B. Values are means ± SD of three replicates. Asterisks represent statistically significant differences between sterile line and its maintainer (* P < 0.05; ** P < 0.01, Student’s t tests). SOD, superoxide dismutase; POD, peroxidase; CAT, catalase
