Characterization of tetramethylrhodamine methyl ester (TMRM)-low and TMRM-high cell populations by fluorescent activated cell sorting (FACS) analysis. Bar graphs shows the expression of the mesenchymal markers CD105, CD90 and Lineage (CD2, CD3, CD11b, CD14, CD15, CD16, CD19, CD56, CD123, and CD235a), the stem cells markers CD117 and nerve growth factor receptor (NGFR) and the endothelial marker vascular endothelial growth factor receptor 2 (VEGFR-2)/kinase insert domain receptor (KDR) in human cardiac mesenchymal progenitor cells (hCmPCs) sorted by TMRM-low and high expression. Data are represented as mean ± SD. n = 3 per group.