(A) Surface antigens (CD45, CD90, and CD105) of BMSCs were identified using flow cytometry. (B) BMSCs at passage 3 were observed under a light microscope. (C) BMSCs were differentiated using adipogenic media. (D, E) BMSCs were differentiated using osteogenic media. (F) Ultrastructural features of exosomes derived from BMSCs (scale bar: 60 nm). (G) Expression of exosome-specific proteins CD63, CD81, and TSG101. (H) Expression of miR-542-3p and miR-150 in exosomes derived from BMSCs; *P<0.05 vs. miR-542-3p.