title: Effect of naloxone on N2O analgesia.
mesh_terms: D006801:Humans; D009270:Naloxone / Q000494:pharmacology*; D009609:Nitrous Oxide / Q000627:therapeutic use*; D010146:Pain / Q000188:drug therapy*; D012684:Sensory Thresholds
chemical_list: D009270:Naloxone; D009609:Nitrous Oxide