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Sensitivity to icotinib is different in various lung adenocarcinoma cell lines and is closely associated with the EGFR genotype. The cells were treated with different concentrations of icotinib. Cell viability was assessed using an MTT assay after 48 h. Data are expressed as a percentage in relation to dimethyl sulfoxide. The mean ± standard deviation was calculated from three independent experiments. EGFR, epidermal growth factor receptor.
