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Surface features of the silk particle-reinforced silk scaffolds by SEM. The 2:0 scaffolds-500~600 μm pore size (A), 2:1 scaffolds-500~600 μm pore size (B), 1:1 scaffolds-500~600 μm pore size (C), 1:2 scaffolds-500~600 μm pore size (D). Scale bar 20 μm.
