CD14 and B-cell chronic lymphocytic leukemia: Analysis of the frequency of CD14+HLA-DRlow/− MDSC cells in 49 CLL, 23 MBL and 21 control cases revealed that the frequency of CD14+HLA-DRlow/− cells was significantly elevated in CLL patients compared with MBL and control cases (Fig. 1A and B), where MBL is a condition that resembles CLL but does not meet all of the criteria for CLL (10).