Figure 3.

The absence of a radiation response modifying effect following a 30 min or 1 h exposure of SA-NH cells stably transfected with a mutant IκBα (SA-NH+mIκBα1) to a 5 mM dose of metformin is described. Each experiment was repeated three times and error bars represent the SEM. P values comparing cells treated with 5 mM of metformin for 30 min or 1 h prior to irradiation and cells exposed to 4 Gy only are presented for comparison.