Micropattern Silk Fibroin Film Facilitates Tendon Repair In Vivo and Promotes Tenogenic Differentiation of Tendon Stem/Progenitor Cells through the α2β1/FAK/PI3K/AKT Signaling Pathway In Vitro

Figure 2

SEM, FTIR, and AFM characterization of SF films. (a) SEM. Group S: SF films without micropatterns; Group G: SF film with micropatterns. The surface of SF film material was clear and stable. (b) FTIR. The β-sheet content in micropattern SF film after water annealing was significantly increased. (c) AFM. The nanoscale roughness on the surface of the micropattern SF film after water annealing treatment was significantly increased.

(a)

(b)

(c)