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SEM images of collagen type II sponge interface before and after biomimetic modification with rFN/Cad-11. The microstructure of the unmodified collagen type II sponge interface (A), Col II/FN interface (B), and Col II/rFN/Cad-11 interface (C) under 200× magnification. The collagen microfibrils were well preserved after the biomimetic modification. Bar: 200 μm. Col II, collagen II; SEM, scanning electron microscopy.
