Abstract
Summary
A study of DNA in the bovine lens has indicated its presence in all layers of the lens. Lenses were obtained from freshly slaughtered calves and cultured in a medium containing [3H]thymidine. The lenses were then separated into three cellular layers: epithelial, cortex and nuclear. Measurements of radioactivity of fractions from sucrose gradients of each preparation provided evidence for the presence of DNA. The radioactivity was sensitive to DNase. Apparently, pieces of DNA have been retained even in the core of the lens and these pieces can be utilized as templates by a repair enzyme (s).
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