Gamma-ray induced strand breakage of Bacillus subtilis DNA irradiated in vivo
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Evidence is presented for the isolation of DNA having a molecular weight of 31 ± 5 × 108 from Bacillus subtilis strain 23 Thy− cells. This accounts for the total DNA content of the genome. Single-strand and double-strand breaks induced by 60Co gamma rays were measured by sucrose density centrifugation. The occurrence of repair of single-strand and possibly double-strand breaks at 0 °C is inferred from survival data and the effects of pre- or post-irradiation heating.
2000 ◽
Vol 66
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pp. 199-205
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1978 ◽
Vol 33
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pp. 105-120
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2001 ◽
Vol 62
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pp. 63-70
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1977 ◽
Vol 80
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pp. 73-77
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2001 ◽
Vol 432
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pp. 35-60
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