(E) Representative images of DLD-1 CENP-B (+/+) or (-/-) cells in late M phase following one CENP-AOFF/ON cycle. EdU staining was used to confirm successful wash-out of Palbociclib and cell progressing through S-phase. Yellow dashed lines contour nucleus of cells in late M phase. Scale bar 5 µm. (F) Quantification of indicated events observed in late M phase cells in the indicated cell lines. Error bars show SEM from 4 independent experiments. 