“…However, when individually considered, none of these markers is specific to myeloid leukemic cells (46,47,59,60), and their combined expression is also found in the more immature, uncommitted CD34ϩ hematopoietic precursors (38,61). At present, cytoplasmic expression of myeloperoxidase (MPO), lisozyme, and tryptase (with the B12 clone) are considered as the most characteristic markers of myeloid cells (40,62,63).…”