the radb mutation had very little effect ( 1.2-fold or less ) on the repair of uv radiation-induced dna daughter-strand gaps in uvrb cells , but it did cause about a 3-fold deficiency in the repair of the dna double-strand breaks that arise in association with nonrepaired daughter-strand gaps in uv-irradiated uvrb recf cells .
C0012899
repair
C1511667
dna double-strand breaks