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Microscopic images of H&E-stained sections of non-cross-linked silk sericin/PVA films, 0.1% w/v genipin-cross-linked silk sericin/PVA films, and Sofra tulle after subcutaneous implantation for 3, 7, 14, and 28 days. Scale bar = 300 µm, arrow: interface between sample implanted and surrounding tissue.
