title: In vivo concentration-response relationships for fentanyl: absence of acute tolerance in the rat tail-flick test.
authors.affiliation: Department of Pharmacology, College of Medicine, University of Arizona, Tucson 85724.
authors.forename: T H
authors.initials: TH
authors.lastname: Kramer
authors.forename: E A
authors.initials: EA
authors.lastname: Ayres
authors.forename: T F
authors.initials: TF
authors.lastname: Burks
mesh_terms: D000700:Analgesics; D000818:Animals; D004305:Dose-Response Relationship, Drug; D004361:Drug Tolerance; D005283:Fentanyl / Q000097:blood / Q000493:pharmacokinetics / Q000494:pharmacology*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D011930:Reaction Time / Q000187:drug effects
chemical_list: D000700:Analgesics; D005283:Fentanyl