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The expression of EGFR, OSM, PDGF-BB, TGF-β and FN1 is up-regulated in the radioresistant cells. qRT-PCR analysis of EGFR (A), OSM (B), PDGF-BB (C), TGF-β (D), and FN1 (E) mRNAs in the indicated cells. Fold change was calculated with ΔΔCT method (39) and p was calculated using ΔCT values. Fold change values are the means ± S.E. of three separate sample preparations. **, p < 0.01 and ***, p < 0.001.
