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Antioxidant activity of flavonoids flavone (a), 3-hydroxyflavone (b), 5-hydroxyflavone (c) and 6-hydroxyflavone (d) against hemolysis induced by hydrogen peroxide in blood of type O+. The results are expressed as a percentage of the average in comparison to the positive control group (Hb + H2O2). Analysis by ANOVA followed by Dunnett post-test. * p < 0.05, ** p < 0.01, *** p < 0.001 (n = 3).
