Bell, E M Relationships between excretion of steroid hormones and tryptophan metabolites in patients with breast cancer. [electronic resource] - The American journal of clinical nutrition Jun 1971 - 694-8 p. digital Publication Type: Journal Article ISSN: 0002-9165 Standard No.: 10.1093/ajcn/24.6.694 doi Subjects--Topical Terms: 17-Hydroxycorticosteroids--urine17-Ketosteroids--urineAdministration, OralAdultAge FactorsBreast Neoplasms--metabolismChromatography, Thin LayerFemaleFluorescenceHumansHydrolasesKynurenine--isolation & purificationMiddle AgedNeurospora--enzymologyTryptophan--administration & dosageXanthurenates--isolation & purificationortho-Aminobenzoates--isolation & purification