This converts indoxyl sulfate in the urine into the red and blue colored compounds indirubin and indigo.
Deep Purple | Down syndrome | Purple Heart | Tourette syndrome | Asperger syndrome | The Color Purple | Purple Rain | The Color Purple (film) | Marfan syndrome | Purple Hairstreak | Down Syndrome | Turner syndrome | Purple-rumped Sunbird | Purple Rain (film) | Purple Gang | Down's syndrome | Asperger's syndrome | Williams syndrome | Tyrian purple | Stockholm syndrome | Severe acute respiratory syndrome | Rett syndrome | Purple Rain (album) | Purple people | Papa's Got A Brand New Bag | Niagara Purple Eagles women's ice hockey | New Riders of the Purple Sage | Irukandji syndrome | Chronic fatigue syndrome | Wiskott–Aldrich syndrome protein |