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Relaxations of porcine coronary arteries, preconstricted with 1 μM U46619, to bradykinin in the absence (control) or presence of 10 μM quinaprilat, 10 μM omapatrilat or 1 μM phosphoramidon. Data (mean±s.e.mean of five experiments) are expressed as a percentage of the contraction induced by U46619.
