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Cardiac responses. CK-MB serum concentration (A), cardiac lipoperoxidation [malondialdehyde (MDA); B] and catalase activity [U* = μmoles of H2O2 consumed/min; C] were measured in MNU-treated animals injected with saline (Control) or DOX exposed or not to 0.05% I2 for one week. Values are expressed as mean ± SD. Means with different letters indicate statistically significant differences (p < 0.05). Basal group in CK-MB corresponds to control animals without MNU treatment.
