Table 2.

Effects of exposures to DBT for 24 h, 48 h, and 6 days on the viability of human NK cells and human T/NK cells.

	Percent viability
	Concentration of DBT
	0	0.05	0.1	0.25	0.5	1	2.5	5 µM
Length of exposure of purified NK cells to DBT
24 h	95±4	96±4	95±5	94±6	95±4	89±8	86±8*	84± 8*
48 h	93±7	94±6	92±9	92±4	89±7	75±12*	64±5*	63±12*
6 d	84±6	80±6	84±10	76±12	68±5*	69±6*	65±14	66±4*
Length of exposure of T/NK cells to DBT
24 h	97±3	98±3	98±3	97±2	98±3	93±7	86±7*	86±8*
48 h	98±2	97±3	97±1	97±3	95±6	86±6*	74±6*	75±4*
6 d	94±4	92±5	93±8	89±7	76±3*	63±9*	60±7*	60±12*

^*Indicates a significant decrease in viability compared to control cells