title: Letter: Enhanced utilization of brain acetylcholine during morphine withdrawal in the rat.
mesh_terms: D000109:Acetylcholine / Q000032:analysis / Q000378:metabolism*; D000818:Animals; D001921:Brain / Q000378:metabolism*; D001923:Brain Chemistry / Q000187:drug effects; D006426:Hemicholinium 3 / Q000494:pharmacology; D006801:Humans; D008297:Male; D009021:Morphine Dependence / Q000378:metabolism*; D009269:Nalorphine / Q000494:pharmacology; D051381:Rats; D013375:Substance Withdrawal Syndrome / Q000378:metabolism*; D013997:Time Factors
chemical_list: D006426:Hemicholinium 3; D000109:Acetylcholine; D009269:Nalorphine