CD34 and acute myeloid leukemia: There were significant negative correlations between WBCs, CD34+LSCs, CD34+ CD38low/−LSCs, CD34+ CD38low/−CD123+LSCs and DFS, also significant negative correlations between the same factors and OS implicating difficulty of salvage therapy or reinduction therapy to prolong survival in this group of AML patients, correlations couldn’t be done between FAB type and survival (because of small number of patients in each type and different types of variables as FAB is categorical variable while survival is numeric one), as shown in (Table 5).