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Co-culture of gastric cancer cells with M2 polarized macrophages promotes cisplatin resistance. A: Detection of cell viability by CCK-8 assay in SGC7901 cells treated with cisplatin (DDP); B and C: Analysis of cell apoptosis by flow cytometry in SGC7901 cells co-cultured with inactivated macrophages and M2 macrophages exposed to DDP for 48 h. Data shown are the mean ± SD. bP < 0.01; cP <0.001. DDP: Cisplatin.
