Tryptophan pyrrolase, kynurenine, and pyridoxine.
D006801:Humans; D006854:Hydrocortisone / Q000037:antagonists & inhibitors; D007737:Kynurenine / Q000378:metabolism* / Q000652:urine; D008099:Liver / Q000201:enzymology; D010105:Oxygenases / Q000378:metabolism*; D014366:Tryptophan Oxygenase / Q000378:metabolism*; D026681:Vitamin B 6 Deficiency / Q000209:etiology* / Q000378:metabolism*
D007737:Kynurenine; D010105:Oxygenases; D014366:Tryptophan Oxygenase; D006854:Hydrocortisone