Table 1.

Slight delay in 53BP1 focus formation in AT cells and in XTC-2 cells in the presence of wortmannin after X-ray exposure

Cell typeAvg no. of 53BP1 foci per nucleus at indicated time after X-ray irradiation:
0 h30 min3 h
HT108012.9 ± 10.362.1 ± 24.976.5 ± 10.4
AT0.82 ± 1.3423.5 ± 13.267.7 ± 21.6a
XTC-21.5 ± 1.554 ± 1873 ± 13
XTC-2 + wortmannin1.5 ± 1.530 ± 1668 ± 14