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Representative photomicrographs of macrophages in the A–C Col repaired group and D–F SIS group. CD68 positive–stained cells represent both M1 and M2 phenotypes, fibroblasts, and endothelial cells. CD80 positive–stained cells represent the M1 (proinflammatory) phenotype, whereas CD163 positive–stained cells represent the M2 (anti-inflammatory) phenotype. G The M2/M1 ratios were different between the groups (immunohistochemistry stain; magnification ×400; scale bars, 50 μm).
