Figure 3: Ventricular myocyte contractility. AMVM were isolated from diabetic mice two weeks after STZ injection. Contractility was measured as percent shortening of ventricular myocytes in the presence of b-adrenergic agonist isoproterenol at 100 nM. Data represent means ± standard deviations from 12 - 15 individual myocytes isolated from eight separate myocyte preparatioins. **, p<0.01.