Fig. 2

Characterization of human Wharton’s jelly mesenchymal stem cells (hWJ-MSC) and hWJ-MSC-derived exosomes. a Representative bright field microscopy image of hWJ-MSC. b Representative flow cytometry histograms of hWJ-MSC at passage 6. c Representative electron microscopy image of hWJ-MSC-derived exosomes (d) revealing a median diameter of 43 nm. e Representative Exo-Check antibody array of isolated exosomes