Figure 4. Components of the membrane cytoskeleton identified in the fiber cell membrane proteome. Actin-binding proteins, intermediate
filament proteins and elements of the spectrin cytoskeleton were detected. The numbers in parentheses indicate the lens preferred
expression index (LPEI, see text for details). Occasionally, it was not possible to calculate the LPEI because of inadequate
hybridization signals, these instances are indicated by an asterisk.