title: Oral opiate intake in a free-choice procedure in the rat.
authors.affiliation: Institute of Pharmacology, Faculty of Sciences, University of Milan, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Sala
authors.forename: D
authors.initials: D
authors.lastname: Braida
authors.forename: M P
authors.initials: MP
authors.lastname: Leone
authors.forename: P
authors.initials: P
authors.lastname: Calcaterra
authors.forename: E
authors.initials: E
authors.lastname: Gori
mesh_terms: D000284:Administration, Oral; D000818:Animals; D002755:Choice Behavior / Q000187:drug effects*; D008297:Male; D009294:Narcotics / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains; D013375:Substance Withdrawal Syndrome / Q000523:psychology
chemical_list: D009294:Narcotics