TABLE 1.

Role of HilE during infection

Genotype of straina:		Infection route	Inoculum (CFU)	No. of mice	Spleen		Small intestine
A	B				Median CIb	Pc	Median CI	P
ΔhilE	WT	i.p.	103	5	1.41	NS	0.79	NS
		Oral	107	5	0.66	NS	0.93	NS
			108	15	2.08	NS	1.41	NS
ΔhilE ΔfliZ	ΔfliZ	i.p.	103	9	0.92	NS	0.85	NS
		Oral	107	9	3.35	0.01	1.88	0.04
			108	5	4.97	0.01	4.21	0.06

^aThe strains used were JS135, JS996, JS2115, and JS2116.

^bThe competitive index (CI) was calculated as described in Materials and Methods.

^cThe Student t test was used to compare the CIs to those for the inocula. NS, not significant.