TABLE 5.

Distribution of origin-proximal sites following NA (100 μg/ml) removal

Time following NA removal	1 focus	2 foci	n/N
min	% of cells	% of cells
0	85 ± 5	15 ± 5	71/3
30	68 ± 5	32 ± 5	122/3
60	64 ± 6	36 ± 6	55/2