Figure 1: A and B Show the clonogenic cellular sensitivity of the two breast cancer cell lines sets (Brk-WT, Brk-KM, Vector) to increasing doses of gamma radiation. Figure 1A shows the response of the MDA-MB-157 cell lines and Figure 1B shows the response of the MDA-MB- 468 cell lines. The data are derived from at least three independent experiments for each cell line. Error bars represent standard error of the mean cellular survival after exposure to 2, 4, 6 and 8 Gy gamma radiations.