title: ANTAGONISM OF THE EXCITATORY EFFECTS OF ACETYLCHOLINE ON ATRIAL REFRACTORINESS BY ATROPINE, QUINIDINE AND PROCAINE AMIDE.
mesh_terms: D000109:Acetylcholine; D001285:Atropine; D006321:Heart; D006325:Heart Atria; D006584:Hexamethonium Compounds; D007545:Isoproterenol / Q000031:analogs & derivatives; D010600:Pharmacology; D011342:Procainamide; D011802:Quinidine; D011817:Rabbits; D012106:Research
chemical_list: D006584:Hexamethonium Compounds; D001285:Atropine; D011802:Quinidine; D011342:Procainamide; D007545:Isoproterenol; D000109:Acetylcholine; C084581:dichloroisoproterenol
keywords: ACETYLCHOLINE; ATROPINE; DICHLOROISOPROTERENOL; EXPERIMENTAL LAB STUDY; HEART; HEXAMETHONIUM COMPOUNDS; PHARMACOLOGY; PROCAINE AMIDE; QUINIDINE; RABBITS