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Abstract
The effects of ionizing radiation on the rat lens were investigated by means of single 1,500 r whole body or head exposures. The results indicate that there is no marked alteration in carbohydrate metabolism within the first week or two after such exposures to x-ray. A marked increase in the incorporation of C-14-leucine only into the insoluble protein-RNA complex of such lenses has been shown to occur within 6 hours after irradiation. A similar increase in the incorporation of P-32 into this albuminoid RNA° also becomes manifest 6 hours after exposure to x-ray.