KLRK1 and B-cell chronic lymphocytic leukemia: Of the NK cell surface marker expression (MFI), only CD158a was higher in CLL-FIT (257 ± 32 vs. 229 ± 24, p = 0.046), with no differences for CD158b (257 ± 113 vs. 217 ± 39, p = 0.301), NKG2A (769 ± 425 vs. 762 ± 134, p = 0.960), NKG2C (299 ± 58 vs. 264 ± 22, p = 0.093), NKG2D (1293 ± 220 vs. 1331 ± 133, p = 0.651), or CD244 (141 ± 48 vs. 120 ± 5, p = 0.190), data not shown.