CD34+AC133+Cells Isolated from Cord Blood are Highly Enriched in Long‐Term Culture‐Initiating Cells, NOD/SCID‐Repopulating Cells and Dendritic Cell Progenitors

The AC133 antigen is a novel antigen selectively expressed on a subset of CD34+ cells in human fetal liver, bone marrow, and blood as demonstrated by flow cytometric analyses. In this study, we have further assessed the expression of AC133 on CD34+ cells in hemopoietic samples and found that there was a highly significant difference between normal bone marrow and cord blood versus aphereses (p <0.0001) but not between bone marrow and cord blood.