Analgesic activity and morphine antagonism of compounds related to nalorphine.
D000700:Analgesics; D006801:Humans; D009020:Morphine / Q000037:antagonists & inhibitors*; D009269:Nalorphine / Q000031:analogs & derivatives
D000700:Analgesics; D009020:Morphine; D009269:Nalorphine
MORPHINE/antagonists; NALORPHINE/related compounds