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Radiat Environ Biophys. 1986;25(3):189-94.

DNA repair kinetics after exposure to X-irradiation and to internal beta-rays in CHO cells.


DNA strand breaks induced by X- or internal beta-rays were measured using the alkaline unwinding technique. For either type of radiation, repair kinetics were found to be best described by three exponential components, the half-times of which are 2 min, 17 min and 200 min, respectively. These values are the same for X- and internal, beta-irradiation but the initial fractions of the components are different.

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