Expression levels of the top five DNA repair genes as determined by qRT-PCR in LCLs over different IR doses and times.

<p>Relative gene expression is shown for samples that were either sham irradiated or irradiated with 1 Gy, 2 Gy, 5 Gy, 10 Gy or 20 Gy of radiation at 4 hours post-IR, or sham irradiated or irradiated with 10 Gy at 2 h, 4 h, 8 h, 24 h or 48 h post-IR.