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Gefitinib (GFB) combined with cisplatin (cis) promotes S arrest in H358R and A549R cells. a The percentages of H358R and A549R cells in the S phase were improved when incubated with a combination of cisplatin (cis) and gefitinib (GFB) for 48 h, was analyzed by flow cytometry. b Cyclin A and CDK2 expression of S phase regulatory proteins in H358R and A549R cells incubated with drugs for 48 h, was detected by western blot (*P < 0.05)
