Studies on the possible role of cyclic AMP in drug-induced coronary vasodilatation.

Animals Arteries/drug effects,enzymology,metabolism Carbon Isotopes Cattle Coronary Vessels/drug effects,enzymology,metabolism Cyclic AMP/metabolism Dose-Response Relationship, Drug In Vitro Techniques Isoproterenol/pharmacology Kinetics Models, Biological Myocardium/enzymology Papaverine/pharmacology Phosphodiesterase Inhibitors Phosphoric Diester Hydrolases/metabolism Phosphorus Isotopes Tritium Vasodilator Agents/pharmacology

Carbon Isotopes Phosphodiesterase Inhibitors Phosphorus Isotopes Vasodilator Agents Tritium Papaverine Cyclic AMP Phosphoric Diester Hydrolases Isoproterenol