The relative contribution of direct and supraspinal descending effects upon spinal mechanisms of morphine analgesia.
D000818:Animals; D002415:Cats; D002818:Cordotomy; D004305:Dose-Response Relationship, Drug; D005260:Female; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009046:Motor Neurons / Q000187:drug effects*; D009270:Naloxone / Q000494:pharmacology; D013116:Spinal Cord / Q000187:drug effects*; D009435:Synaptic Transmission / Q000187:drug effects*
D009270:Naloxone; D009020:Morphine