Acetylcholinesterase-acetylcholine, an enzyme system essential to rhythmicity in the preneural embryonic chick heart.
D000109:Acetylcholine / Q000494:pharmacology*; D000110:Acetylcholinesterase / Q000494:pharmacology*; D000818:Animals; D002642:Chick Embryo; D004562:Electrocardiography; D006329:Heart Conduction System / Q000187:drug effects* / Q000502:physiology; D006339:Heart Rate / Q000187:drug effects*; D010830:Physostigmine / Q000494:pharmacology
D010830:Physostigmine; D000110:Acetylcholinesterase; D000109:Acetylcholine