DNA-PKCS-deficient and wild-type cells
display similar patterns of chromosome condensation in the presence of
ICRF-193. AA8 and V-3 cells were synchronized at late S/G2
phase and then treated with 0, 0.01, 0.02, 0.05, 0.1, and 1 μg of
ICRF-193 per ml, 80 ng of nocodazole per ml, and 2 mM caffeine for
5 h. Metaphase chromosomes were prepared as described in Materials
and Methods. Representative images of AA8 and V-3 cells are shown.