Figure 5.

Effect of different types of Y-tube conduits injected with hWJMSCs on the ultramicrostructure of the femoral nerve in rats with a femoral nerve defect at 12 weeks after surgery.

(A–C) Transmission electron microscope images reveal well-myelinated nerve fibers in the extracted nerves from rats in groups A, B, and C. There are no significant differences in myelin sheath thickness (arrows), axonal density, and fiber diameters between groups B and C. Scale bars: 10 µm. hWJMSCs: Human umbilical Wharton jelly mesenchymal stem cells.