title: Chemical neurotransmission--yesterday and today.
mesh_terms: D000109:Acetylcholine / Q000502:physiology; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D005075:Biological Evolution; D004837:Epinephrine / Q000502:physiology; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D009448:Neurochemistry / Q000266:history*; D009469:Neuromuscular Junction / Q000502:physiology; D018377:Neurotransmitter Agents / Q000502:physiology*; D009638:Norepinephrine / Q000502:physiology; D011941:Receptors, Adrenergic / Q000502:physiology; D011950:Receptors, Cholinergic / Q000502:physiology; D013373:Substance P / Q000502:physiology; D013564:Sympathetic Nervous System / Q000502:physiology; D013569:Synapses / Q000502:physiology; D009435:Synaptic Transmission; D014649:Vas Deferens / Q000502:physiology
chemical_list: D018377:Neurotransmitter Agents; D011941:Receptors, Adrenergic; D011950:Receptors, Cholinergic; D013373:Substance P; D001285:Atropine; D000109:Acetylcholine; D009638:Norepinephrine; D004837:Epinephrine