title: Increase of morphine-induced analgesia by stimulation of the nucleus raphe dorsalis.
mesh_terms: D000698:Analgesia; D000818:Animals; D001923:Brain Chemistry; D004558:Electric Stimulation; D004567:Electrodes, Implanted; D005260:Female; D006897:Hydroxyindoleacetic Acid / Q000032:analysis; D008636:Mesencephalon / Q000187:drug effects / Q000502:physiology*; D009020:Morphine / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains; D011984:Sensory Receptor Cells / Q000187:drug effects; D012701:Serotonin / Q000032:analysis
chemical_list: D012701:Serotonin; D006897:Hydroxyindoleacetic Acid; D009020:Morphine