Double strand breaks in the DNA of Bacillus subtilis cells irradiated by heavy ions. |
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| Authors: | U Micke G Horneck S Kozubek |
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| Affiliation: | DLR, Institute of Aerospace Medicine, Koln, Germany. |
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| Abstract: | Cells of Bacillus subtilis strain TKJ 8431 in stationary phase were irradiated with X-rays (150 kV at DLR) or heavy ions (Ne, Ar, Pb with residual energies between 3 and 15 MeV/u at GSI). The action cross section for the formation of double strand breaks in the DNA of the irradiated cells follows a similar dependence on mass and energy of the ions as has been found for various biological endpoints, e.g. inactivation, mutagenesis and repair efficacy. |
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