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Figure 8 The effects of isoproterenol stimulation on myocardial nonesterified fatty acid (NEFA) uptake (A) and myocardial glucose uptake (B) in dogs with dilated cardiomyopathy (DCM) before and after treatment with selective ß₁ or combined adrenergic blockade. The indicated p values represent the differences in the carvedilol response and metoprolol or response by analysis of variance. Iso = isoproterenol.