Effects of acetylcholine on single fibers of the atrioventricular node.
D000109:Acetylcholine / Q000494:pharmacology*; D001283:Atrioventricular Node; D000013:Congenital Abnormalities / Q000187:drug effects*; D006801:Humans
D000109:Acetylcholine
ACETYLCHOLINE/effects; DEFECTS, CONGENITAL/effect of drugs on