title: The effects of nifedipine on contraction and monophasic action potential of isolated cat myocardium.
mesh_terms: D000200:Action Potentials / Q000187:drug effects*; D000818:Animals; D002118:Calcium / Q000037:antagonists & inhibitors*; D002415:Cats; D006321:Heart / Q000187:drug effects*; D066298:In Vitro Techniques; D009200:Myocardial Contraction / Q000187:drug effects*; D009543:Nifedipine / Q000494:pharmacology*; D010210:Papillary Muscles / Q000187:drug effects; D011725:Pyridines / Q000494:pharmacology*; D012032:Refractory Period, Electrophysiological; D012849:Sinoatrial Node / Q000187:drug effects; D013997:Time Factors
chemical_list: D011725:Pyridines; D009543:Nifedipine; D002118:Calcium