title: Time-course of alterations in morphine-induced analgesia and nociceptive threshold following medullary raphe lesions.
mesh_terms: D000698:Analgesia; D000818:Animals; D001933:Brain Stem / Q000502:physiology*; D005260:Female; D007700:Kinetics; D008526:Medulla Oblongata / Q000502:physiology*; D009020:Morphine / Q000494:pharmacology*; D009619:Nociceptors / Q000187:drug effects / Q000502:physiology*; D011903:Raphe Nuclei / Q000502:physiology*; D051381:Rats
chemical_list: D009020:Morphine