title: Coexistence of neuronal messengers--an overview.
mesh_terms: D000818:Animals; D002415:Cats; D006168:Guinea Pigs; D000882:Haplorhini; D006651:Histocytochemistry; D007120:Immunochemistry; D051379:Mice; D009420:Nervous System / Q000378:metabolism*; D018377:Neurotransmitter Agents / Q000378:metabolism*; D051381:Rats
chemical_list: D018377:Neurotransmitter Agents