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SEM characterization for the surface topography of NTSs and DTSs. Scale bar ¼ 3 mm (A). The collagen fibril diameter of NTSs and DTSs (p > 0.05) (B). Stiffness of TSs, NTSs, and DTSs as determined by AFM (p > 0.05) (C). Reproduced with permission from Ref. [242]. Copyright 2015, Elsevier Ltd.
