Table 2. Expression of the CD158a/b/e killer-immunoglobulin-like receptors (KIR) and the CD94 and CD161 C-type lectin-like receptors on peripheral blood CD56^low NK cells from patients with clonal (n = 9) and polyclonal (n = 12^*) expansions of CD56^low NK cells.

	Percentage of CD56low NK cells expressing each marker
	CD158a	CD158b	CD158e	CD94	CD161
Clonal#1	20	58	6	100	40
Clonal#2	8	10	8	100	100
Clonal#3	39	20	46	100	87
Clonal#4	0	1	1	100	0
Clonal#5	0	1	1	100	5
Clonal#6	0	3	2	100	0
Clonal#7	1	2	2	100	2
Clonal#8	0	0	0	100	0
Clonal#9	0	7	0	100	100
Median	0	3	2	100	5
Interquartile range	0–14	1–15	0.5–7	100–100	0–93
Minimum-maximum values	0–39	0–58	0–46	100–100	0–100
Polyclonal#1	73	23	9	100	57
Polyclonal#2	10	10	0	81	35
Polyclonal#5	14	n.a.	9	47	32
Polyclonal#6	27	28	20	42	25
Polyclonal#7	28	15	11	40	78
Polyclonal#8	46	37	26	34	75
Polyclonal#9	3	43	0	56	n.a.
Polyclonal#10	75	15	6	65	61
Polyclonal#11	58	73	0	75	62
Polyclonal#12	6	76	0	80	20
Polyclonal#13	3	60	18	76	77
Polyclonal#14	29	70	0	72	37
Median	27.5	37	7.5	68.5	57
Interquartile range	7–55	15–70	0–16.3	43.3–79	32–75
Minimum-maximum values	3–75	23–76	0–26	34–100	25–78
p-values	0.007	0.003	n.s.	<0.0001	n.s.

n.a.: not available; n.s.: Not statistically significant differences (p > 0.05) between clonal and polyclonal cases.

^*In two out of the 14 cases with expanded polyclonal CD56^low NK cells, data about more than one killer receptor was not available, and therefore, these two cases were excluded from Table 2.