Tryptophan metabolism and sunlight.
D002854:Chromatography, Paper; D006801:Humans; D066298:In Vitro Techniques; D011736:Pyridoxine / Q000378:metabolism; D012877:Skin Manifestations; D013053:Spectrophotometry; D013472:Sunlight; D014364:Tryptophan / Q000378:metabolism*; D014557:Urobilin / Q000378:metabolism; D014977:Xanthurenates / Q000652:urine
D014977:Xanthurenates; D014557:Urobilin; D014364:Tryptophan; D011736:Pyridoxine