Morphology of regenerated nerves after sciatic nerve repair. (a) Downstream nerves in the control, PALD, PALDE, and normal groups, as assessed with transmission electron microscopy. Quantification and comparison of (b) myelin sheath thickness and (c) downstream fascicle diameter among various groups. *p < 0.05 compared with the control group. #p < 0.05 compared with the PALD group.
p < 0.05 compared with the PALDE group. PALD, pluronic–alginate–lysine–dextran; PALDE, pluronic–alginate–lysine–dextran loaded with extracellular vesicles.