title: Proceedings: Evolutionary aspects of transmitter heterogeneity.
mesh_terms: D000109:Acetylcholine / Q000502:physiology; D000818:Animals; D005075:Biological Evolution; D009474:Neurons / Q000378:metabolism; D018377:Neurotransmitter Agents / Q000378:metabolism; D013569:Synapses / Q000502:physiology; D009435:Synaptic Transmission
chemical_list: D018377:Neurotransmitter Agents; D000109:Acetylcholine