Conditional hyperalgesia is elicited by environmental signals of morphine.
D000818:Animals; D003214:Conditioning, Classical / Q000187:drug effects*; D003463:Cues; D004361:Drug Tolerance; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009619:Nociceptors / Q000187:drug effects*; D051381:Rats; D012684:Sensory Thresholds
D009020:Morphine