title: Factors which alter the metabolism of tryptophan.
mesh_terms: D000592:Amino Acid Metabolism, Inborn Errors / Q000378:metabolism; D000818:Animals; D003276:Contraceptives, Oral / Q000494:pharmacology; D005260:Female; D006801:Humans; D007737:Kynurenine / Q000378:metabolism; D009539:Nicotinic Acids / Q000378:metabolism; D014364:Tryptophan / Q000378:metabolism* / Q000652:urine; D026681:Vitamin B 6 Deficiency; D014977:Xanthurenates / Q000652:urine
chemical_list: D003276:Contraceptives, Oral; D009539:Nicotinic Acids; D014977:Xanthurenates; D007737:Kynurenine; D014364:Tryptophan