3a, and data not shown)
3a, and data not shown). 9 and 10 hours post-release from the second thymidine arrest. (d) Stable HeLa cell lines transduced with empty vector (lanes 1C4) or an siRNA-resistant form of Cdt1 (Cdt1res lanes 5 and 6) were synchronized as in b and transfected with either control siRNA targeting GFP (lanes 1 and 2) or…