title: Effects of tetraethylammonium and 4-aminopyridine upon canine sinus node.
mesh_terms: D015761:4-Aminopyridine; D000200:Action Potentials / Q000187:drug effects; D000631:Aminopyridines / Q000494:pharmacology*; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D004285:Dogs; D004305:Dose-Response Relationship, Drug; D008564:Membrane Potentials / Q000187:drug effects; D009200:Myocardial Contraction; D009431:Neural Conduction; D009467:Neuromuscular Depolarizing Agents / Q000494:pharmacology*; D011188:Potassium / Q000502:physiology; D011433:Propranolol / Q000494:pharmacology; D012849:Sinoatrial Node / Q000187:drug effects*; D013757:Tetraethylammonium Compounds / Q000494:pharmacology*
chemical_list: D000631:Aminopyridines; D009467:Neuromuscular Depolarizing Agents; D013757:Tetraethylammonium Compounds; D001285:Atropine; D011433:Propranolol; D015761:4-Aminopyridine; D011188:Potassium