Fig 1: Imatinib increases p53 levels when combined with MX, but not with DXR.Western blot of p53 and RAD 51 in HeLa cells. Imatinib combined with MX increases p53 protein levels in HeLa cells. RAD51 level was slightly reduced in cells treated with imatinib and MX. Cells were treated with MX (0.6 µM), DXR (0.8 µM), imatinib (5 µM) or their combinations for 30 hours.