both the sensitive ( ws ) and the relatively resistant ( wr ) cell lines were shown to be equally capable of both ligation of dna double-strand breaks ( although the efficiency varied with the actual site of the break ) introduced into psv2gpt and homologous recombination of psv2gpt fragments ( recombination events are thought to be important in the repair of dna-dna interstrand crosslinks ) .
C1511667
dna double-strand
C0012899
repair