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Sciatic nerve injury repair using keratin sponge. (a) Scanning electron microscope showing the micro-porous structure of keratin sponge. (b) Schematic illustration of the sciatic nerve crush injury model. (c) Keratin sponge degradation. Reprinted with permission from Gao, J.; Zhang, L.; Wei, Y.; Chen, T.; Ji, X.; Ye, K.; Yu, J.; Tang, B.; Sun, X.; Hu, J. (2019). Copyright 2019 Journal of Materials Science: Materials in Medicine, Springer Nature [109].
