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Figure 1. (a) Response of HeLa cells to low-dose X-ray irradiation, measured 7 days post irradiation as capacity for resazurin reduction. Data are means and standard deviation (SD) for three independent experiments, except for control (zero dose) and 7.5 mGy where n=6. (b) Protection against the irradiation effect at 7.5 mGy by LNMMA (1 mM) but not by ascorbic acid (AA, 200 µM) or p38 MAPK inhibitor SB203580 (10 µM). Data are means and (SD) for three independent experiments.
