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Phenotypic profile of initial ASC population. Passage 3 ASCs are mostly positive for mesenchymal markers CD73 and CD105. A very small minority is positive for vascular markers, such as early and mature endothelial markers (CD34, VEGFR2, CD31) and the pericyte marker αSMA. ASCs, adipose-derived stromal/stem cells; αSMA, α-smooth muscle actin; VEGF, vascular endothelial growth factor.
