Fig. 4.
No synergy was seen between gemcitabine and ATM kinase inhibitor. Exponentially dividing lung cancer cell lines were treated with increasing doses of gemcitabine and a fixed concentration of ATM kinase inhibitor KU55933 for 48 h and MTT reagent was then added. Representative examples from at least 3 replicate experiments are shown (mean, SD of 4 replicates)