LSD-25 antagonism of morphine analgesia.
D000698:Analgesia; D006801:Humans; D008238:Lysergic Acid Diethylamide / Q000494:pharmacology*; D009020:Morphine / Q000037:antagonists & inhibitors*; D010146:Pain; D059408:Pain Management
D009020:Morphine; D008238:Lysergic Acid Diethylamide
LYSERGIC ACID DIETHYLAMIDE/pharmacology; MORPHINE/antagonists