Studies on urinary pigments. I. Preparation of crude pigment from human urine.
D000327:Adsorption; D002606:Charcoal; D002854:Chromatography, Paper; D006801:Humans; D010860:Pigments, Biological / Q000032:analysis / Q000302:isolation & purification / Q000652:urine*; D013057:Spectrum Analysis
D010860:Pigments, Biological; D002606:Charcoal