TABLE 1.

IgG subclass ratios of serum anti-LPS responses in CBA and BALB/c mice^a

S. enterica strain and sampling time pointb	CBA	BALB/c
Serovar Stanley
D49	1.04 ± 0.26	0.81 ± 0.16
D69	1.22 ± 0.26	∗0.87 ± 0.10
Serovar Stanley-K88
D49	1.30 ± 0.38	∗0.87 ± 0.23
D69	1.06 ± 0.17	∗0.62 ± 0.21

^aSerum IgG anti-LPS responses of CBA and BALB/c mice (from the experiment shown in Fig. 2) were dissected into IgG₁ and IgG_2a responses. Data show ratios of IgG₁:IgG_2a ELISA titers (geometric mean ± standard deviation; n = 5), and an asterisk denotes significance at the 5% level, as determined by the two-tailed t test.

^bD, day.