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Effects of acute administration of ethanol, mate tea, and mate tea plus ethanol on thiobarbituric acid reactive substances (TBA-RSs) (a) and on catalase (b) activity in rat blood. Data are mean ± SD for 5 independent experiments (animals) performed in duplicate. **P < 0.01; ***P < 0.001 compared to control group (Duncan multiple-range test). One catalase (CAT) unit is defined as 1 μmol of H2O2 consumed per minute.
