title: Letter: Disturbed brain tryptophan metabolism in hepatic coma.
mesh_terms: D000596:Amino Acids / Q000097:blood; D000818:Animals; D001921:Brain / Q000378:metabolism*; D006501:Hepatic Encephalopathy / Q000097:blood / Q000378:metabolism*; D006801:Humans; D051381:Rats; D014364:Tryptophan / Q000097:blood / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D014364:Tryptophan