Figure 4: A and B Show the level of ATM phosphoserine794 protein in the cell lines before and after exposure to 2 Gy gamma radiations. Data are derived from analysing the nuclear intensity of fluorescent immunostaining of ATM phosphoserine794 protein derived from imaging flow cytometry of at least 10,000 cells. Figure 4A shows the ATM phosphoserine794 protein in the MDA-MB-157 cell lines and Figure 4B in the MDA-MB-468 cell lines.