The indices of lipid peroxidation and the contents of alpha-tocopherol and retinol in the blood plasma of sheep exposed to repeated gamma irradiations were studied. It was shown that a repeated acute gamma irradiation of sheep with sublethal and lethal doses after 9 months of chronic low-dose gamma irradiation adversely affected the activity of the lipid free-radical oxidation. A radiologic pathology in the repeatedly irradiated animals developed as a decrease in the intensity of spontaneous chemiluminescence. Also, a tendency to an increase in the concentration of malonic dialdehyde was observed along with weak changes in the contents of triene and diene conjugates and the levels of alpha-tocopherol and retinol.
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