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H827-7-2 and H827-7-4 cells resistant to gefitinib. (A and B) Cell lines were treated with the indicated doses of GW3965 or gefitinib for 96 h. The viability of cells was determined using the CCK-8 assay. (C) H827-7-2 and H827-7-4 cells were treated with gefitinib alone or combined with LXR ligands for 96 h. **P<0.001 compared with control; #P<0.01, ##P<0.001 between one treatment alone. CCK-8, cell counting kit-8; LXR, liver X receptor.
