Urinary excretion of indoxyl sulfate (indican) by human subjects ingesting a semisynthetic diet containing variable quantities of L-tryptophan.
D004032:Diet; D007200:Indican / Q000652:urine*; D007419:Intestinal Secretions / Q000187:drug effects*; D013053:Spectrophotometry; D014364:Tryptophan / Q000494:pharmacology*
D014364:Tryptophan; D007200:Indican