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Cell-cycle analysis of 6 Gy-irradiated breast cancer cells pretreated or not with 0.5 mM PtNPs. (A) Cell-cycle distribution of the MDA-MB-231 cells exposed to 0.5 mM PtNPs and/or 6 Gy irradiation. Cells were harvested at day 3 (n = 3) or at day 6 (n = 3) after the exposure and/or irradiation. (B) Cell-cycle distribution of the T47D cells exposed to PtNPs and/or 6 Gy irradiation. Cells were harvested at day 3 (n = 1) or at day 6 (n = 2) after the exposure and/or irradiation.
