CD34 and acute myeloid leukemia: The effect of 0.5, 1 and 2 μM BTZ on the stem‐like features of AML KG‐1a cells was evaluated by flow cytometric immunophenotyping using the myeloid lineage markers CD1319 and CD3320 and the AML stem/progenitor markers CD34,21 CD3821 and CD12322 after 48 h of incubation (Figure 2).