Cell survival analysis following O
, IR, and H
treatments. A549 cells over-expressing hOgg1, hMYH, hMTH and hNTH following (A) O2, (B) IR, and (C) H2O2. Brackets indicate statistical significance at * p < 0.05 and ** p < 0.001 compared to pSF91.1 at each individual dose for 1 representative experiment.