HLA-E and B-cell chronic lymphocytic leukemia: Our data confirm such observation in CLL circulating B cells (15.24 ± 1.80 vs. 3.31 ± 1.27 in healthy controls), while no significant difference was revealed in the HLA-E expression by T cells of the CLL subjects with respect to controls (1.36 ± 0.19 vs. 0.79 ± 0.18 in healthy controls) (Figure 11A,B, respectively).