Figure 9.

Human umbilical cord MSC‐derived extracellular vesicles (hUCMSC‐EVs) modulated inflammation in the distal nerve stump. A, Longitudinal sections of the regenerated nerves were stained with IL‐6, IL‐1β and IL‐10 antibodies at 3 d after injury. IL‐6‐, IL‐1β‐ and IL‐10‐positive sites were stained brown with an immunohistochemical stain. The scale bar represents 50 μm. B, Quantitative analyses of IL‐6‐, IL‐1β (C) and IL‐10‐positive areas in each group (D). n = 3. Data are presented as means ± SEM, *P < 0.05