title: Involvement of the pineal gland and melatonin in murine analgesia.
mesh_terms: D000698:Analgesia; D000818:Animals; D002940:Circadian Rhythm; D004305:Dose-Response Relationship, Drug; D008297:Male; D008550:Melatonin / Q000502:physiology*; D051379:Mice; D009020:Morphine / Q000494:pharmacology*; D009270:Naloxone / Q000494:pharmacology; D010870:Pineal Gland / Q000502:physiology*; D011930:Reaction Time / Q000187:drug effects; D013997:Time Factors
chemical_list: D009270:Naloxone; D009020:Morphine; D008550:Melatonin