Figure 1. Diagrammatic illustration of combining ES and conductive scaffold in bridging a 15 mm sciatic nerve defect in rats (A), and microstructural characteristics of conductive chitosan/polypyrrole scaffold at longitudinal section (B) and cross section (C), as well as the longitudinal plane of non-conductive chitosan scaffold (D).

Scale bar  = 50 µm for (C) and 100 µm for (B, D).