Figure 2. Protein distribution patterns in 6 representative porcine lenses.  The proportions of HMW protein (A); MMW proteins (B); LMW proteins (C) and insoluble protein (D) are plotted as a function of the cumulative amount of protein from the lens periphery to centre.  With progression towards the lens center there is a decrease in the HMW and MMW proteins and a concomitant increase in LMW and insoluble proteins.