title: Effect of verapamil on the noraml action potential and on a calcium-dependent slow response of canine cardiac Purkinje fibers.
mesh_terms: D000200:Action Potentials / Q000187:drug effects*; D000818:Animals; D001145:Arrhythmias, Cardiac / Q000209:etiology / Q000503:physiopathology; D002118:Calcium / Q000494:pharmacology*; D002306:Cardiac Volume; D003864:Depression, Chemical; D004285:Dogs; D006329:Heart Conduction System / Q000187:drug effects*; D008564:Membrane Potentials / Q000187:drug effects; D012964:Sodium / Q000494:pharmacology; D013757:Tetraethylammonium Compounds / Q000494:pharmacology; D013997:Time Factors; D014700:Verapamil / Q000494:pharmacology*
chemical_list: D013757:Tetraethylammonium Compounds; D012964:Sodium; D014700:Verapamil; D002118:Calcium