The relative contributions of the testing cylinder and the heated plate in the hot plate procedure to the development of tolerance to morphine in rats.
D000704:Analysis of Variance; D000818:Animals; D004361:Drug Tolerance; D006358:Hot Temperature; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D010600:Pharmacology / Q000295:instrumentation; D051381:Rats; D011919:Rats, Inbred Strains; D011930:Reaction Time; D013997:Time Factors
D009020:Morphine