title: Letter: Effect of acetylcholine on ventricular arrhythmias.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology / Q000627:therapeutic use*; D000818:Animals; D001145:Arrhythmias, Cardiac / Q000139:chemically induced / Q000517:prevention & control*; D001285:Atropine; D004285:Dogs; D006352:Heart Ventricles / Q000187:drug effects
chemical_list: D001285:Atropine; D000109:Acetylcholine