Table 1. Percentage increase in cell surface marker positivity compared with baseline after 48 hr stimulation of NK cells with either IL-15 DCs or IL-4 DCs.

	CD56+ NK cells		CD56bright NK cells		CD56dim NK cells
	IL-15 DCs	IL-4 DCs	IL-15 DCs	IL-4 DCs	IL-15 DCs	IL-4 DCs
CD56	42.8±9.9%	20.1±9.5%*	51.7±14.3%	26.2±14.9%*	42.2±12.3%	19.8±10.3%*
CD69	33.6±11.1%	13.4±12.3%*	47.6±15.4%	15.3±7.8%*	32.6±11.0%	13.6±12.8%*
CD25	11.0±5.2%	4.5±3.8%*	16.8±10.5%	5.3±5.5%*	9.8±5.4%	4.3±3.6%*
HLA-DR	7.9±3.1%	3.7±1.3%*	7.9±6.0%	2.3±2.7%*	7.9±3.0%	3.9±1.4%*
NKG2D	25.7±15.2%	2.0±5.0%*	38.2±14.2%	11.4±8.6%*	24.1±14.4%	1.8±4.5%*
NKp30	13.3±8.4%	0.5±0.3%*	42.0±12.4%	10.5±9.5%*	9.8±8.5%	0.3±0.2%*
NKp46	11.1±6.3%	0.1±0.2%*	16.2±12.1%	3.1±5.4%*	10.3±6.4%	0.1±0.2%*

Pairwise comparison of the expression of CD56, CD69, CD25, HLA-DR, NKG2D, NKp30 and NKp46 on NK cells (total CD56⁺ NK cell population, CD56^bright subset and CD56^dim subset) after 48-hr incubation with IL-15 DCs or IL-4 DCs. Results are presented as mean (± SD) percentage increase in positivity of the indicated cell surface marker as compared with the baseline expression on unstimulated NK cells (calculated using the Overton histogram subtraction algorithm by subtracting the unstimulated NK cell control histogram from the DC-stimulated NK cell sample histogram). Asterisks indicate a statistically significant difference in cell surface marker expression between IL 15 DC-stimulated and IL-4 DC-stimulated NK cells (n = 6; *, P<0.05).