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SEM images of in situ loaded DIC hydrogel network in comparison with unmedicated hydrogel cross-linked with 5% w/w PETRA. (A) Unmedicated PEO, (B) PEO-DIC 3.17% w/w, (C) PEO-DIC 8.37% w/w, (D) PEO-DIC 13.12% w/w, (E) PEO-DIC 20.26% w/w. Scale bars are 200 μm, 50 μm and 5 μm for micrographs featuring the outer surface of hydrogel network (1–3), 100 μm, 50 μm, and 10 μm for micrographs featuring the cross section of hydrogel network (4–6).
