Relapse to morphine self-administration in morphine, methadone, and levo-alpha-acetylmethadol (LAAM) post-addict rats.
D000818:Animals; D005260:Female; D006801:Humans; D008691:Methadone / Q000031:analogs & derivatives; D008692:Methadyl Acetate; D009021:Morphine Dependence; D051381:Rats; D012646:Self Administration; D012895:Sleep, REM / Q000187:drug effects; D019966:Substance-Related Disorders
D008692:Methadyl Acetate; D008691:Methadone