Figure 2: Radiation sensitization after 24 h incubation with different concentrations of gemcitabine in gemcitabine sensitive SW p and resistant SWg lung tumour cells and in gemcitabine sensitive A2780 and resistant AG6000 ovary cancer cells. Surviving fractions are corrected for gemcitabine toxicity alone (for values see text). Cells are plated immediately after irradiation. Means with SEM of at least three separate experiments are shown.