Sites of morphine induced analgesia in the primate brain: relation to pain pathways.
D000818:Animals; D001921:Brain / Q000187:drug effects* / Q000502:physiology; D001931:Brain Mapping; D004305:Dose-Response Relationship, Drug; D008251:Macaca; D009020:Morphine / Q000008:administration & dosage / Q000494:pharmacology*; D010146:Pain
D009020:Morphine