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. 2019 Mar 10;15(5):999–1009. doi: 10.7150/ijbs.29805

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FePt/GO NSs enhanced the radiation sensitivty of H1975 cells. (A) Cell viability of H1975 cells treated with FePt/GO NSs (25 ug/mL) before or after radiation for 24 h. *, p < 0.05. (B) The survival fraction of FePt/GO NSs (25 ug/mL) were significant lower than that of vehicle control. (C) Representative crystal violet stainning of H1975 cells irradiated with 2 Gy with or without FePt/GO NS treatment (25 ug/mL). (D) Representative cytometry analysis of annexin V and PI in H1975 cells. The double treatment group had more cell apoptosis than individual ones. Statistical analysis reveals the apoptotic rate (%) of H1975 cells after different treatment, *, p < 0.05, **, p < 0.01.