Fig. 1.

Identification and culture of hucMSCs and ROMECs. A. Morphology of primary hucMSCs under a light microscope. B-D. Representative Alizarin Red, Oli Red O, and Alcian Blue staining images of chondrogenic, adipogenic and osteogenic differentiation of hucMSCs, respectively. E. hucMSC surface markers were determined by flow cytometry, n = 3 per group. F. Morphology of primary ROMECs under a light microscope. G-I. ROMECs were observed by cell immunofluorescence staining for CD31, CD34, and VWF