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Relative contribution of L-NMMA-sensitive (i.e. NO-mediated) and L-NMMA-resistant (i.e. EDHF/other) vasodilator pathways to acetylcholine (ACh) and A23187-induced dilatation in isolated aortic rings from treated (zofenopril, ZOF; lisinopril, LIS; N-acetylcysteine, NAC) and untreated rats with chronic myocardial infarction (MI, n=11) or no-MI (n=8).
