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Flow cytometry showed that apoptosis of Hela/TK cells was induced by the different methods. A. gene treatment group; B. 60Co radiotherapy group; C. Combined treatment; D. control group, and the cells of apoptotic index (AI) were 22.76 ± 3.51%, 25.15 ± 3.17%, 45.27 ± 5.15, 0.42 ± 0.13% respectively.
