Extracts of eye lens nuclei from 24 desert woodrats (Neotoma lepida) were subjected to electrophoresis. This process produced protein patterns simple and distinctive which fell into two groups, one with one band and the other with two. Intraspecific differences in proteins from the lens nuclei of mammals have not been reported before. Electrophoretic separation of nuclear lens proteins may be applied to study the biochemical-genetic basis of behavior.
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