title: Cytochemical studies of the neural circuitry underlying pain and pain control.
mesh_terms: D000818:Animals; D004399:Dynorphins / Q000502:physiology; D004745:Enkephalins / Q000502:physiology; D010146:Pain / Q000503:physiopathology* / Q000517:prevention & control; D013116:Spinal Cord / Q000503:physiopathology*
chemical_list: D004745:Enkephalins; D004399:Dynorphins