title: Pain.
mesh_terms: D000818:Animals; D001931:Brain Mapping; D001933:Brain Stem / Q000503:physiopathology; D002490:Central Nervous System / Q000503:physiopathology; D002540:Cerebral Cortex / Q000503:physiopathology; D003782:Dental Pulp / Q000294:innervation; D000882:Haplorhini; D006801:Humans; D009420:Nervous System / Q000503:physiopathology*; D010146:Pain / Q000175:diagnosis / Q000503:physiopathology*; D010525:Peripheral Nerves / Q000503:physiopathology; D011957:Receptors, Opioid / Q000502:physiology; D013116:Spinal Cord / Q000503:physiopathology; D013133:Spinothalamic Tracts / Q000503:physiopathology; D013788:Thalamus / Q000503:physiopathology
chemical_list: D011957:Receptors, Opioid