The fact that unstable aberrations was Still in sight in the malignant transformation cells suggested that there have been a bit of 3~HTdR left in these cells which kept damaging DNA of the cells.

• 非稳定性畸变在多次传代的转化细胞中仍然存在,说明微量~3HTdR可能残留于DNA中,持续对细胞造成损伤。