Acute tolerance to narcotic analgesic drugs in rats.
D000698:Analgesia; D000700:Analgesics / Q000494:pharmacology; D000818:Animals; D003609:Dactinomycin / Q000494:pharmacology*; D004361:Drug Tolerance; D005260:Female; D003932:Heroin / Q000494:pharmacology; D007275:Injections, Intravenous; D008297:Male; D008614:Meperidine / Q000494:pharmacology; D009020:Morphine / Q000494:pharmacology; D009294:Narcotics / Q000494:pharmacology; D051381:Rats
D000700:Analgesics; D009294:Narcotics; D003609:Dactinomycin; D003932:Heroin; D009020:Morphine; D008614:Meperidine