TABLE 2.

Telomere abnormalities in Ku86 heterozygous cells

Type of telomere abnormality	HCT116	HCT116 Ku86+/−
Telomere loss	0/1,840	61/4,232
Chromosome fusion	0/10	6/23a

^aTwo events were fusions between different chromosomes (one of which is shown in Fig. 4C), and four events were fusions generating ring chromosomes (one of which is shown in Fig. 4D).