CD4 and acute myeloid leukemia: However, when CD45hi cells representative of the bone marrow population was sorted by flow cytometry, the CD3 +ve cells were higher in the relapsed AML vs. new AML vs. HD as 81.1% vs. 78% vs. 60.3% (p = 0.02), but no differences were found in the CD4 +ve or CD8 +ve T cell subsets.