the National Natural Science Foundation of China (No. 10335050); National Basic Research Program of China (Grant No. 2003CCB00200).
Human hepatoma and normal liver cells were irradiated with 12C6+ ion beams (LET = 96.05 keV/μm) and γ-rays at Heavy Ion Research Facility in Lanzhou (HIRFL). The chromatid breaks and break types were detected using ...