title: Receptors and endogenous ligands. Implications for addiction.
authors.affiliation: Department of Drug Dependence Research, Karolinska Institute, Stockholm, Sweden.
authors.forename: L T
authors.initials: LT
authors.lastname: Terenius
authors.forename: C P
authors.initials: CP
authors.lastname: O'Brien
mesh_terms: D000818:Animals; D001921:Brain / Q000187:drug effects* / Q000503:physiopathology*; D004361:Drug Tolerance / Q000502:physiology; D004723:Endorphins / Q000502:physiology*; D006801:Humans; D009293:Opioid-Related Disorders / Q000503:physiopathology*; D011957:Receptors, Opioid / Q000187:drug effects* / Q000502:physiology*
chemical_list: D004723:Endorphins; D011957:Receptors, Opioid