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Morphology of bone marrow-derived EPCs on day 4 (A) and day 9 (B) of culture. These cells formed capillary tubes on Matrigel (C), uniformly expressed endothelial cell markers CD31 (D), CD34 (E), Flk-1 (F), and incorporated Dil-Ac-LDL (G). Scale bars: 100 µm.
