title: Studies on the interaction of propranolol and tetrodotoxin on dV/dtmax of canine Purkinje fiber action potentials.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D004285:Dogs; D004357:Drug Synergism; D006329:Heart Conduction System / Q000187:drug effects*; D066298:In Vitro Techniques; D007473:Ion Channels / Q000187:drug effects; D011433:Propranolol / Q000494:pharmacology*; D011690:Purkinje Fibers / Q000187:drug effects*; D012964:Sodium / Q000378:metabolism / Q000494:pharmacology; D013779:Tetrodotoxin / Q000494:pharmacology*
chemical_list: D007473:Ion Channels; D013779:Tetrodotoxin; D012964:Sodium; D011433:Propranolol