title: Decreased rat brain acetylcholine utilization after heroin and cross tolerance to l-methadone.
mesh_terms: D000109:Acetylcholine / Q000378:metabolism*; D000818:Animals; D001921:Brain / Q000187:drug effects / Q000378:metabolism*; D003864:Depression, Chemical; D004361:Drug Tolerance; D006426:Hemicholinium 3 / Q000031:analogs & derivatives / Q000494:pharmacology; D003932:Heroin / Q000494:pharmacology*; D008297:Male; D008691:Methadone / Q000494:pharmacology*; D051381:Rats
chemical_list: D006426:Hemicholinium 3; D003932:Heroin; D000109:Acetylcholine; D008691:Methadone