Figures 3: A-D show the response of the three lymphoblastoid cell lines with mono-allelic mutations in the BRCA1 gene to increasing doses of gamma radiation in the presence and absence of 5 μM Olaparib. The GM13705 cells line is shown in Figure 3A, GM14090 in Figure 3B and GM16105 in Figure 3C. Figure 3D combines the three responses into a survival curve. Broken lines show the response of the cells to gamma radiation alone while the unbroken line shows the response to gamma radiation in the presence of Olaparib. Error bars represent standard error of the mean of at least three independent experiments.