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Figure 1 (Upper) Anterior wall myocardial perfusion at baseline and in response to intravenous adenosine in the three experimental groups. (Lower) Relative change of anterior wall myocardial perfusion in response to intravenous adenosine in the three experimental groups (compared to baseline). HC = hypercholesterolemic pigs; HC+S = hypercholesterolemic pigs receiving simvastatin; N = normocholesterolemic pigs. *p < 0.01 versus N and HC+S.