By the example of the cytogenetie investigation of a children group from the village of Narodychi as a model of chronic radiation exposure of low intensity, the significantly elevated cytogenetie effects as compared both with the control group and spontaneous chromosome mutagenesis have been established. It have been determined that the frequency of unstable chromosome aberrations remained on a relatively constant level, but the frequency of stable chwmosome injuries had the trend to accumulate with time. So, in spite of the continuation of mutagenic radiation exposure, near 83 % of cells with unstable radioinduced aberrations had been eliminated. The frequency of stable cytogenetie markers of radiation exposure established under the FISH analysis significantly differed from the aged standard, which confirmed the domination of the radiation origin of chromosome mutagenesis т the observed children group as highly probable.

• Дибський Сергій Сергійович (біологічні науки)
• Дибська Олена Борисівна (біологічні науки)
• Педан Людмила Ростиславівна (біологічні науки)

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