Fig. 2

Characterization of hDPSCs. a hDPSCs cultured in growth medium for 21 days, scale bar = 20 µm. b Alizarin red S staining of hDPSCs cultured in odonto/osteogenic medium for 18 days, scale bar = 500 µm. c Oil red O staining of hDPSCs cultured in adipogenic medium for 14 days, scale bar = 20 µm. d Alcian blue staining of hDPSCs cultured in chondrogenic medium for 21 days, scale bar = 20 µm. e Flow cytometry exhibited that the expression of CD73, CD90, CD146 were positive in hDPSCs, which were negative against CD34 and CD45