CD33 and acute myeloid leukemia: Some of these blasts can secreteMVs bearing myeloid-specific CD markers, whichcan be thus distinguished from MVs of normal cells.Several studies indicated that the expressions ofCD13, CD34, CD117, and CD33 in blast-derived MVsin AML patients can be associated with the presenceof activated blasts in this disease (Table 1) (11, 40,47).