Mechanical properties and permeability of porous chitosan-poly(p-dioxanone)/silk fibroin conduits used for peripheral nerve repair

(A) SEM image for lumen surface; (B) SEM image for outer-diameter surface; (C) SEM image for transversal section of conduit wall; and (D) fluorescent image for cell distribution in the transversal section of conduit wall with DAPI nuclei staining after culture for 14 days.