Fig. 1. Cdt1 is overexpressed in various cancer cell lines. To compare the expression levels of the replication-initiation proteins in 293T and several cervical cancer cell lines (HeLa, Caski, SiHa and C33A) with normal epithelial cell lines (HCK1, HDK1, HSAEC1, HBEC1), whole-cell lysates were prepared and immunoblotted with the indicated antibodies.