title: Coexistence of several putative neurotransmitters in single identified neurons of Aplysia.
abstract: By sensitive enzymatic micromethods several putative neurotransmitters were measured in four identifiable neurons of Aplysia californica (R-2, R-14, L-11, and C-1). Serotonin was found in all of these neurons, and octopamine in all but C-1. Acetylcholine has been previously reported to be present in R-2 and L-11. The catecholamines, norepinephrine and dopamine, were not detected in the four cells examined. The possible biological consequence of the presence of several putative transmitters in single identifiable neurons is discussed.
mesh_terms: D000818:Animals; D004298:Dopamine / Q000032:analysis; D005724:Ganglia / Q000166:cytology; D006632:Histamine / Q000032:analysis; D008974:Mollusca / Q000032:analysis*; D009474:Neurons / Q000032:analysis*; D009638:Norepinephrine / Q000032:analysis; D009655:Octopamine / Q000032:analysis*; D012701:Serotonin / Q000032:analysis*; D009435:Synaptic Transmission
chemical_list: D009655:Octopamine; D012701:Serotonin; D006632:Histamine; D004298:Dopamine; D009638:Norepinephrine