CD34 and acute myeloid leukemia: Furthermore, we compared the ME1 expression between healthy hematopoietic stem cells (HSCs; Lin−, CD34+, CD38−, CD90+, CD45RA−), common myeloid progenitors (CMPs; Lin−, CD34+, CD38+, CD45RA−, CD123+), or granulocyte-macrophage progenitors (GMPs; Lin−, CD34+, CD38+, CD45RA+, CD123+), with mononuclear cells from AML patients.