CD19 and acute lymphoblastic leukemia: The percentage of each subpopulation (I–V) found in the different groups is expressed as the median ± ranges with respect to the total NKtotal cell [CD14−, CD19−, CD3−, CD56+, and CD16±] (Figure 2(b)); the medians of each of the groups of 10 controls and 10 or 9 patients with ALL are shown.