The Value of the Photoreactivable Component in E. Coli B_{s − 1} Cells Exposed to Densely and Sparsely Ionizing Radiations

M.N. Myasnik Laboratory of Molecular Biology and Biophysical Laboratory, Institute of Medical Radiology, 249020, Obninsk, Kaluga Region, U.S.S.R.

I.I. Morozov Laboratory of Molecular Biology and Biophysical Laboratory, Institute of Medical Radiology, 249020, Obninsk, Kaluga Region, U.S.S.R.

V.G. Petin Laboratory of Molecular Biology and Biophysical Laboratory, Institute of Medical Radiology, 249020, Obninsk, Kaluga Region, U.S.S.R.

Summary

The dependence of the photoreactivation effect in E. coli B_{s − 1} cells on LET and energy of sparsely ionizing radiation was studied. The photoreactivation was shown to be absent after densely ionizing radiation (α-particles of ²³⁹Pu; fast neutrons E_n = 0·85 MeV) and after sparsely ionizing radiation with energies below 200 keV. In those cases where photoreactivation took place, the photoreactivable sector was found to increase with the voltage of the radiation.

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The Value of the Photoreactivable Component in E. Coli B_{s − 1} Cells Exposed to Densely and Sparsely Ionizing Radiations

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The Value of the Photoreactivable Component in E. Coli Bs − 1 Cells Exposed to Densely and Sparsely Ionizing Radiations

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The Value of the Photoreactivable Component in E. Coli B_{s − 1} Cells Exposed to Densely and Sparsely Ionizing Radiations