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Comparative growth inhibition rates of PC9 and PC9/G cells exposed to gefitinib or AG1024. Cells (2×103 cells/well) were plated in 96-well plates and treated with various concentrations of (A) gefitinib and (B) AG1024 for 72 h. The ability of the drugs to inhibit cell proliferation was determined by the CCK-8 assay. The results represent the means ± SD of at least three independent experiments.
