title: The avian neurotransmitter.
mesh_terms: D000818:Animals; D001285:Atropine / Q000494:pharmacology; D002645:Chickens; D004558:Electric Stimulation; D004837:Epinephrine / Q000032:analysis / Q000502:physiology*; D006321:Heart / Q000187:drug effects; D006329:Heart Conduction System / Q000502:physiology*; D006339:Heart Rate; D006352:Heart Ventricles / Q000032:analysis; D008297:Male; D009206:Myocardium / Q000032:analysis; D009638:Norepinephrine / Q000032:analysis / Q000502:physiology*; D011433:Propranolol / Q000494:pharmacology
chemical_list: D001285:Atropine; D011433:Propranolol; D009638:Norepinephrine; D004837:Epinephrine