Representative images showing localization of (A, D) MDC1, (B, E) TOPBP1, and (C, F) CIP2A in micronuclei of DLD1 (n=3 independent experiments, total 482, 290, and 319 DLD1 cells were analyzed for MDC1, TOPBP1, and CIP2A, respectively) and RPE p53−/− (n=3 independent experiments, total 315, 360, and 299 RPE p53−/− cells were analyzed for MDC1, TOPBP1, and CIP2A, respectively) (percentage of cells (mean +/− SEM) with γH2AX positive micronuclei showing the phenotype in the images are indicated on the images). Yellow arrows point to the micronuclei.