title: Effect of midbrain raphe lesion on the antinociceptive action of morphine and other analgesics in rats.
mesh_terms: D000818:Animals; D003061:Codeine / Q000494:pharmacology; D011431:Dextropropoxyphene / Q000494:pharmacology; D008614:Meperidine / Q000494:pharmacology; D008636:Mesencephalon / Q000378:metabolism / Q000502:physiology*; D008691:Methadone / Q000494:pharmacology; D009020:Morphine / Q000494:pharmacology*; D051381:Rats; D012701:Serotonin / Q000378:metabolism
chemical_list: D012701:Serotonin; D009020:Morphine; D008614:Meperidine; D011431:Dextropropoxyphene; D008691:Methadone; D003061:Codeine