Fig. 3

5-Aza treatment reverses drug resistance in S3 cells. a After S3 cells were mock-treated or treated with 5-aza, they were treated with different concentrations of cisplatin (upper panel) or taxol (lower panel). Mock-treated SiHa cells were used as a control. Cell survival was measured by MTT assay. b S3 and SiHa cells were treated with 5-aza to demethylate their DNA, and cells were then challenged with different concentrations of oxaliplatin. Cell survival was measured by MTT assay. The survival rates of untreated S3 and SiHa cells were included from Fig. 1 for comparison