Figure 3From: A specific inhibitor of protein kinase CK2 delays gamma-H2Ax foci removal and reduces clonogenic survival of irradiated mammalian cellsImmunocytochemical measurement by flow cytometry of Xrcc1 phosphorylation status. Cells were treated with 20 μM TBB (12 hours) and inspected for phospho-Xrcc1 staining (see Methods). Unstained samples are denoted as "blank". Samples prepared from MRC5 cells (upper panel) were measured at an increased amplifier gain to allow for a better representation of the difference between the respective histograms.Back to article page