Bionic Silk Fibroin Film Induces Morphological Changes and Differentiation of Tendon Stem/Progenitor Cells

Figure 3

SEM images of SF films with bionic microstructures at 5, 10, 15, and 20 μm, respectively (magnification at ×1000) (a). The maximum loading, ultimate stress (N/mm²), and breaking elongation (%) of SF film groups and native tendon were measured (b). The strain-stress curves of samples in different groups (c). Group N was the native tendon group, group S was the SF film group with a smooth surface, and the other groups were SF film groups with different microstructure sizes (5, 10, 15, and 20 μm). indicates .

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(b)

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