TABLE 5.

Mortality of β2-m^−/− mice due to WNV infection

Dose (PFU/mouse)	Total no. of mice	No. of dead mice	Survival time (days)	Mortality (%)	MSTa (days)
108	28	2	5	82	9.7 ± 2.9b
		2	6
		3	7
		3	8
		5	11
		3	12
		4	13
		1	14
103	30	1	9	80	13.0 ± 2.0b
		2	10
		3	11
		5	12
		3	13
		2	14
		6	15
		2	16

^aValues represent MST ± standard deviation of mice which died up to 21 days after infection.

^bStatistically significant (P < 0.05) compared to B6 mice (see Materials and Methods for details).