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BMSCs pretreated with IL-33 promoted the polarization of M2 macrophages. (A) A coculture pattern diagram with BMDM in the lower chamber and BMSCs in the upper chamber. (B) Western blotting assays were performed to evaluate the expression of iNOS, IL-6, CD163, and Arg–1 in the BMDM of each group. (C, D) The difference in the expression of CD163 and iNOS in each group was compared by immunofluorescence. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001, and ∗∗∗∗p < 0.0001.
