Fig. 3

The morphology and ultrastructure of hBMSC-dSCs are highly similar to hSCs. A. The SEM images of hBMSCs, hSCs, and hBMSC-dSCs. hSCs (b) and hBMSC-dSCs (c) showed bipolar or tripolar spindle morphology compared to the fibroblast-like morphology of the hBMSCs (a). Scale bars, 20 μm. B. The TEM images of hBMSCs, hSCs, and hBMSC-dSCs. The membrane surface of hSCs (b) and hBMSC-dSCs (c) existed characteristic villi (arrow-heads) compared to the smooth membrane surface of hBMSCs (a). Scale bars, 5 μm (a, c); 2 μm (b). n = 3 independent experiments