The reaction of ninhydrin with keratin proteins.
D000596:Amino Acids / Q000032:analysis; D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D004121:Dimethyl Sulfoxide; D005241:Feathers / Q000032:analysis; D006197:Hair / Q000032:analysis; D006733:Horns / Q000032:analysis; D006801:Humans; D007202:Indicators and Reagents; D007633:Keratins / Q000032:analysis; D007700:Kinetics; D008239:Lysine; D008433:Mathematics; D008722:Methods; D012756:Sheep; D013053:Spectrophotometry; D014935:Wool / Q000032:analysis
D000596:Amino Acids; D007202:Indicators and Reagents; D007633:Keratins; D008239:Lysine; D004121:Dimethyl Sulfoxide