Figure 3From: Microarray analysis of DNA damage repair gene expression profiles in cervical cancer cells radioresistant to 252Cf neutron and X-rays Cell growth curves of HeLa, HeLaNR and HeLaXR cells. The cell doubling time of HeLaNR and HeLaXR cells is 33.12 ± 3.67 h and 36.94 ± 3.16 h, respectively, is longer than that of the parent HeLa cells (28.62 ± 2.77 h).Back to article page