Table 4.

Median proportions and 25th–75th interquartile range of apoptotic leukaemic cells and normal B cells

Groups	Before cell culture	72-h culture
		Medium alone	DSP30+rIL-2
% Apoptotic cells
Low CTLA-4 expressors (n = 19)	0.0 [0.0–0.0]	34.3 [24.9–40.5]	44.4 [33.6–58.4]
High CTLA-4 expressors (n = 19)	0.0 [0.0–0.0]	19.2 [13.8–24.6]	51.4 [29.6–64.0]
Controls (n = 15)	0.0 [0.0–0.0]	26.2 [22.4–28.7]	49.3 [39.9–67.1]
Low vs high CTLA-4 expressors	NS	P = 0.02	NS
Low CTLA-4 expressors vs controls	NS	NS	NS
High CTLA-4 expressors vs controls	NS	NS	NS