Table 3.

Median proportions and 25th–75th interquartile range of leukaemic cells and normal B cells co-expressing Ki67

Groups	Unstimulated	24-h culture		72-h culture
		Medium alone	DSP30+rIL-2	Medium alone	DSP30+rIL-2
% Ki67-positive cells
Low CTLA-4 expressors (n = 19)	2.1 [0.3–4.5]	2.2 [1.3–4.3]	10.6 [3.8–28.8]	1.5 [1.1–1.9]	9.2 [4.0–21.6]
High CTLA-4 expressors (n = 19)	3.3 [1.6–3.6]	2.3 [1.3–3.6]	10.2 [2.5–15.1]	2.2 [1.6–3.0]	9.3 [5.9–12.0]
Controls (n = 15)	1.0 [0.0–2.8]	0.0 [0.0–0.2]	13.2 [10.2–15.0]	0.4 [0.0–3.3]	13.4 [11.3–17.5]
Low vs high CTLA-4 expressors	NS	NS	NS	NS	NS
Low CTLA-4 expressors vs controls	NS	NS	NS	NS	NS
High CTLA-4 expressors vs controls	NS	NS	NS	NS	P = 0.05