Figure 1. Endogenous LMW peptides isolated from WS- and WI-protein fractions of normal and age-matched cataractous lenses. A: Peptides isolated from αA-crystallin. B: Peptides isolated from αB-crystallin. Relative to normal lenses, the peptides found in cataractous lenses are as follows: Black present in WS- and WI-protein fractions in normal and cataractous lenses, blue found only in the WS-protein fraction, and ref only in the WI-protein fraction.