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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Radiother Oncol. 2014 Jan 16;110(3):538–545. doi: 10.1016/j.radonc.2013.10.040

Figure 1. The CD133 marker promotes IR resistance in A549 cells but not H1229 cells.

Figure 1

(a) CD133+ cells were magnetically separated from CD133− cells and IR sensitivity was measured via clonogenic survival on the two populations. Cells were treated with an IR dose range of 2–8Gy and permitted to grow for 10–14 days prior to survival analysis. Unpaired t-test performed with two-tailed p value shown, error bars = SEM. (b) Representative images of γ-H2AX immunostaining. 50 cells per treatment were analyzed for foci formation and the % positive was plotted.