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Polarization phenotype of macrophages validation in vivo. (A,F) Immunohistochemical staining of macrophage related proteins. Scale bars: 60 μm. (B,C) Stream-based detection of macrophage M1/M2 polarization markers. (D) Flow cytometry test of M0, M1 and M2 macrophage markers. (E). Quantitative results of macrophage detection by flow cytometry. (n = 5, G1: Sham. G2: PBS-treated. G3: GelMA/HAMA. G4: BExos@GelMA/HAMA. ∗p < 0.05; ∗∗p < 0.01; ∗∗∗p < 0.001.)
