title: Opioid involvement in the rewarding effects of chronic cocaine.
authors.affiliation: Department of Anatomy & Reproductive Biology, University of Hawaii School of Medicine, Honolulu 96822.
authors.forename: R P
authors.initials: RP
authors.lastname: Hammer
authors.forename: D W
authors.initials: DW
authors.lastname: Clow
authors.forename: L P
authors.initials: LP
authors.lastname: Spear
mesh_terms: D000818:Animals; D003042:Cocaine / Q000494:pharmacology*; D006801:Humans; D011957:Receptors, Opioid / Q000187:drug effects* / Q000502:physiology; D012201:Reward
chemical_list: D011957:Receptors, Opioid; D003042:Cocaine