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Characteristics of neural stem cells (NSCs) and exosomes derived from NSCs. (A) Morphology of neurospheres with typical shape examined by light microscopy. (B) Nestin immunofluorescence (red), a marker of NSCs, in neurospheres. (C) Exosome morphology examined by transmission electron microscopy. (D) Western blot analysis of exosome surface markers. (E) Particle size distribution of Nor-Exo and IGF-Exo by Nano Sight.
