Argpyrimidine, a blue fluorophore in human lens proteins: high levels in brunescent cataractous lenses.
Padayatti PS, Ng AS, Uchida K, Glomb MA, Nagaraj RH. Argpyrimidine, a blue fluorophore in human lens proteins: high levels in brunescent cataractous lenses. Invest Ophthalmol Vis Sci. 2001 May; 42(6):1299-304.