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Superoxide dismutase activity of HP1061. Superoxide dismutase activity was measured in cell extracts of HP1061 grown in the absence or presence of MTZ (10 μg/ml) or paraquat (3.3 μg/ml). Units of activity per mg protein were determined based on 1 unit inhibiting the rate of cytochrome c reduction by 50%. The average data of two experiments are shown.
