Fig. 4.
Differentiation of rat MSCs into endothelial cells. a Rat endothelial cells served as a positive control. b GFP-expressing MSCs co-cultured rat endothelial cells. c Rat endothelial cells stained with antibody against CD31. d MSC-derived endothelial cells were stained with the antibody against CD31. e Morphology of rat endothelial cells