Table 2. Phenotypic characterization of immunomagnetically isolated stem/progenitor cell populations of UCB.

Antigen	Cells expressed stem/progenitor surface markers among human UCB-derived
	lineage-negative cells	CD34+ cells	CD133+ cells
	(mean ± SD)	(mean ± SD)	(mean ± SD)
CD34+	12.1%±7.2%	91.2%±4.8%	60.3%±9.2%
CD133+	12.3%±8.2%	72.1%±12.6%	94.2%±5.1%
CD34+/CD133+	8.5%±5.0%	69.5%±11.3%	55.43%±13.4%
CXCR4+	89.9%±3.3%	74.9%±13.1%	50.4%±11.0%
CD144+	3.1%±1.6%	5.5%±1.8%	4.9%±2.1%
Endotelial progenitor cells (CD34+/CD133+/CD144+)	1.7%±1.1%	3.8%±2.1%	3.3%±1.4%
Mesenchymal stem cells (CD105+/CD73+/CD90+/CD45−/CD34−/CD11b−/CD19−/HLA-DR−)	0.0084%±0.0108%	—	—