title: Letter: 5-hydroxytryptamine and hepatic coma.
mesh_terms: D001921:Brain / Q000378:metabolism; D006501:Hepatic Encephalopathy / Q000209:etiology*; D006801:Humans; D008103:Liver Cirrhosis / Q000378:metabolism; D012701:Serotonin / Q000378:metabolism*; D014364:Tryptophan / Q000378:metabolism
chemical_list: D012701:Serotonin; D014364:Tryptophan