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Cross-sectional images of (A, D) untreated, (B, E) Ar plasma-treated, and (C, F) Ar-NH3/H2 plasma-treated scaffolds obtained after in vivo implantation under the skin of Sprague-Dawley rats for 5 days. Cells in (A–C) were stained with DAPI, while cells in (D–F) were stained with DAPI (blue) and CD68 (green). Top and bottom scaffold surfaces are distinguished by dashed lines.
