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Invasion assay. Invasiveness of MDA-MB-231 cells decreased after miRNAs overexpression in a IL-4-induced M2 macrophage and b TAM. MDA-MB-231 cells were cultured in the upper chamber of the transwell containing matrigel and were placed in 24 well plate containing conditioned medium of different treated macrophages. The migrated cells to the bottom of the membrane were stained and quantified. *P < 0.05, **P < 0.01
