title: Twenty years of tryptophan studies in humans.
mesh_terms: D001943:Breast Neoplasms / Q000378:metabolism; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000378:metabolism; D007737:Kynurenine / Q000378:metabolism; D008099:Liver / Q000201:enzymology; D009362:Neoplasm Metastasis; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D007737:Kynurenine; D014364:Tryptophan; D006854:Hydrocortisone