Fig. 3

EF-sEVs promoted neurogenesis at the injury site in the spinal cord. A Representative immunofluorescence images showing the staining of neurofilaments (NF, green) and glial fibrillary acidic protein (GFAP, red) in lesion sites in different groups. B Fluorescent immunostaining of choline acetyl transferase (ChAT, green) in lesion sites in different groups. Scale bar=500 μm (A, B left line before magnification) and 100 μm (A, B right lines after magnification)