TABLE 4.

Influenza-induced NK cell cytotoxicity in the lungs and spleens of AL and ER mice at baseline and during influenza infection¹

	d 0	d 1	d 2	d 3
Lung	% cytotoxicity
AL	2.46 ± 1.75a	12.71 ± 5.17b**	2.74 ± 0.39a	2.98 ± 0.20a
ER	0.26 ± 0.22	0.75 ± 0.31	2.07 ± 0.31	0.39 ± 0.13
Spleen
AL	2.48 ± 0.48a	2.69 ± 1.13a	6.22 ± 1.01b*	4.18 ± 0.18ab
ER	1.17 ± 0.44	0.48 ± 0.26	1.78 ± 0.58	2.27 ± 0.60

¹Values are means ± SEM, n = 4. Means in a row with superscripts without a common letter differ, P < 0.05. Asterisks indicate difference between groups at that time: *P < 0.05, **P < 0.01.