title: Effect of morphine injectedin periadueductal gray on the activity of single units in nucleus raphe magnus of the rat.
mesh_terms: D000818:Animals; D001933:Brain Stem / Q000187:drug effects*; D002535:Cerebral Aqueduct / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D005071:Evoked Potentials / Q000187:drug effects; D005727:Ganglia, Spinal / Q000187:drug effects; D007276:Injections, Intraventricular; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009270:Naloxone / Q000494:pharmacology; D009433:Neural Inhibition / Q000187:drug effects; D009434:Neural Pathways / Q000187:drug effects; D009474:Neurons / Q000187:drug effects; D009619:Nociceptors / Q000187:drug effects; D011903:Raphe Nuclei / Q000187:drug effects*; D051381:Rats; D011957:Receptors, Opioid / Q000187:drug effects
chemical_list: D011957:Receptors, Opioid; D009270:Naloxone; D009020:Morphine