title: Second messengers or second agonists?
mesh_terms: D000818:Animals; D001048:Aplysia; D019835:FMRFamide; D008084:Lipoxygenase / Q000502:physiology; D008959:Models, Neurological; D009475:Neurons, Afferent / Q000502:physiology*; D009479:Neuropeptides / Q000502:physiology
chemical_list: D009479:Neuropeptides; D019835:FMRFamide; D008084:Lipoxygenase