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Superoxide dismutase (SOD) is an enzyme that protects against oxidative stress from superoxide radicals in living cells. This enzyme was extracted from sardinelle (Sardinella aurita) viscera, purified and characterized. The Cu/Zn-SOD was purified to homogeneity by the three-step procedure consisting of the heating at 65°C for 15 min, precipitation with ammonium sulphate (30–60%, w/v) and Sephadex...
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