title: Pain.
mesh_terms: D000344:Afferent Pathways / Q000503:physiopathology*; D000818:Animals; D001679:Biogenic Amines / Q000502:physiology; D001933:Brain Stem / Q000503:physiopathology; D003712:Dendrites / Q000502:physiology; D004558:Electric Stimulation; D004723:Endorphins / Q000502:physiology; D005727:Ganglia, Spinal / Q000503:physiopathology; D006801:Humans; D008526:Medulla Oblongata / Q000503:physiopathology; D009020:Morphine / Q000494:pharmacology; D009474:Neurons / Q000502:physiology; D010146:Pain / Q000503:physiopathology*; D010525:Peripheral Nerves / Q000503:physiopathology; D013116:Spinal Cord / Q000503:physiopathology; D013788:Thalamus / Q000503:physiopathology
chemical_list: D001679:Biogenic Amines; D004723:Endorphins; D009020:Morphine