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Effect of ex vivo myocardial infact size and cardiomyocyte apoptosis. Normal and diabetic rats were treated for 7 days with or without resveratrol (Control) treatment. Thereafter, hearts were isolated and perfused with KHB in Langendorff apparatus for 15 min. followed by 30 min. of global ischaemia and 2 hrs of reperfusion. At the end of reperfusion, hearts were either prepared for infarct size measurement by Triphenyl tetrazolium chloride (TTC) staining (A) or cardiomyocyte apoptosis by TUNEL method (B and C). (B) Representative images of TUNEL staining with (b) or without (a) resveratrol treatment.