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The morphology of PLCL/SF/Hep scaffold. (A) The digital photograph of the whole scaffold. (B) The SEM photograph of the cross-section. (C) The TEM photograph of the shell-core structure. (D–F) The SEM photographs of the loose nano-yarn. (G–I) The SEM photographs of the tight nanofiber membrane.
Abbreviations: PLCL, poly(L-lactide-co-ε-caprolactone); SF, silk fibroin; Hep, heparin.
