title: Immunological function in active heroin addicts and methadone-maintained former addicts: observations and possible mechanisms.
authors.forename: M J
authors.initials: MJ
authors.lastname: Kreek
mesh_terms: D000818:Animals; D006556:Heroin Dependence / Q000276:immunology*; D006801:Humans; D007694:Killer Cells, Natural / Q000187:drug effects; D008691:Methadone / Q000009:adverse effects* / Q000493:pharmacokinetics
chemical_list: D008691:Methadone