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DNA strand breaks per genome generated by treatment with 5 mM H2O2 for 20 min and repair kinetics in different E. coli strains
| Recovery time (min) | No. of strand breaks in strain with indicated genotype
|
|||
|---|---|---|---|---|
| Wild type | xthA | nfo | xthA nfo | |
| 0 | 45 | 257 | 63 | 317 |
| 10 | 6 | 104 | 10 | 274 |
| 30 | 0 | 47 | 8 | 193 |
| 60 | 0 | 33 | 1 | 154 |
