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Immunohistochemical staining around alginate microbeads. Spleen was used as a control for markers CD68 (A), CD163 (D), CCR7 (G). CD68+ stain is observed (B, C)as well as CCR7+ (H,I). CD163+ staining was not observed (E, F). (C, F, I) higher resolution images of the inset area.
