title: The blockade of Vmax of the atrioventricular action potential produced by the slow channel inhibitors verapamil and nifedipine.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001283:Atrioventricular Node / Q000187:drug effects* / Q000502:physiology; D002118:Calcium / Q000494:pharmacology; D005260:Female; D006329:Heart Conduction System / Q000187:drug effects*; D066298:In Vitro Techniques; D007473:Ion Channels / Q000187:drug effects*; D008297:Male; D009543:Nifedipine / Q000494:pharmacology*; D011725:Pyridines / Q000494:pharmacology*; D011817:Rabbits; D013779:Tetrodotoxin / Q000494:pharmacology; D014700:Verapamil / Q000494:pharmacology*
chemical_list: D007473:Ion Channels; D011725:Pyridines; D013779:Tetrodotoxin; D014700:Verapamil; D009543:Nifedipine; D002118:Calcium