Plasma copper levels and their significance in morphine analgesia and tolerance.
D000698:Analgesia; D000818:Animals; D003300:Copper / Q000097:blood*; D004361:Drug Tolerance; D006801:Humans; D007977:Levallorphan / Q000494:pharmacology; D008297:Male; D009020:Morphine / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D051381:Rats; D013375:Substance Withdrawal Syndrome; D013859:Thiocarbamates / Q000494:pharmacology
D013859:Thiocarbamates; D007977:Levallorphan; D009020:Morphine; D003300:Copper