title: Mechanism of placebo analgesia.
mesh_terms: D000698:Analgesia; D002986:Clinical Trials as Topic; D004336:Drug Antagonism; D006801:Humans; D006930:Hyperalgesia / Q000139:chemically induced; D009270:Naloxone / Q000494:pharmacology; D010149:Postoperative Pain / Q000188:drug therapy*; D010919:Placebos; D012107:Research Design
chemical_list: D010919:Placebos; D009270:Naloxone