title: A spinal opioid synapse mediates the interaction of spinal and brain stem sites in morphine analgesia.
mesh_terms: D000818:Animals; D001933:Brain Stem / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009270:Naloxone / Q000494:pharmacology; D009434:Neural Pathways / Q000187:drug effects; D009619:Nociceptors / Q000187:drug effects*; D051381:Rats; D011919:Rats, Inbred Strains; D011957:Receptors, Opioid / Q000187:drug effects*; D012684:Sensory Thresholds; D013116:Spinal Cord / Q000187:drug effects*; D013569:Synapses / Q000187:drug effects; D009435:Synaptic Transmission / Q000187:drug effects*
chemical_list: D011957:Receptors, Opioid; D009270:Naloxone; D009020:Morphine