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Heart weight (HW) to body weight (BW) ratio in the control group and in the rats treated with isoproterenol alone (rats with myocardial infarction), metformin alone (100 mg/kg, sham), and with isoproterenol plus metformin. Iso: isoproterenol; Met: Metformin. Values are mean±SEM (n=6). #p<0.001 from respective control value; *p<0.05 and ***p<0.001 as compared with isoproterenol treated group using one way ANOVA with Student-Newman-Keuls post hoc test.
