title: [Tryptophan-nicotinic acid metabolism in human viral hepatitis].
mesh_terms: D002690:Chlamydia Infections; D006505:Hepatitis; D006506:Hepatitis A / Q000378:metabolism*; D006801:Humans; D009539:Nicotinic Acids; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D009539:Nicotinic Acids; D014364:Tryptophan
keywords: HEPATITIS, INFECTIONS/metabolism; TRYPTOPHAN/metabolism