We have summarized the results of cytogenetic studies of peripheral blood lymphocytes conducted in the institutions of Kiev and Kharkov in persons irradiated after the accident of the Chernobyl NPP. The average level of chromosomal aberrations and the appearance of cytogenetic markers characteristic of their irradiation effect was higher in the examinees in comparison with the control. The increase in the number of aberrations in certain Kiev residents as well as the development of lymphogranulomatosis in some liquidators of the accident were detected. The increase in the frequency of chromosomal aberrations in liquidators of the accident was accompanied by the reduction in the level of reparative DNA synthesis of blood lymphocytes. The necessity to expand cytogenetic examination in persons that participated in the liquidation of the accident on the ChNPP and Kiev inhabitants is discussed.
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