TABLE 3.

Sequence analysis of blunt, complementary, and noncomplementary DNA ends after repair in WT or Ercc1^−/− cells

DNA ends and genotype	n	% with nucleotide added	% Microhomology mediated
Blunt
WT	18	0	89
Ercc1−/−	21	0	81
5′ Overhangs, complementary
WT	18	6	72
Ercc1−/−	17	6	71
3′ Overhangs, noncomplementary
WT	30	37	80
Ercc1−/−	31	10a	71

^aP < 0.05.