King George III's urine and indigo blue.
Arnold
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Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, 66160-7421, USA.
D003116:Color; D004032:Diet; D005197:Famous Persons; D049672:History, 19th Century; D006801:Humans; D007200:Indican / Q000652:urine; D008297:Male; D011164:Porphyrias / Q000266:history* / Q000378:metabolism; D014364:Tryptophan / Q000378:metabolism*; D014556:Urine / Q000737:chemistry* / Q000382:microbiology
D014364:Tryptophan; D007200:Indican