TABLE 1.

Measurement of TNF-α and IL-8 levels in an in vitro chemotaxis assay

Chemoattractanta	Level ofb:
	TNF-α		IL-8
	Top well	Bottom well	Top well	Bottom well
CP9 (wild type)	0.8 ± 0.8	2.9 ± 0.3	343 ± 78.9	1,559 ± 84.7
CP921 (O4-antigen deficient)	0.0 ± 0.0	1.8 ± 0.9	159 ± 19.5	1,182 ± 50.9
CP9.137 (capsule deficient)	0.6 ± 0.6	2.9 ± 0.2	232 ± 61.4	2,543 ± 175

^aLive bacteria (10⁷ CFU) from the indicated E. coli strains were used.

^bValues are given in picograms per milliliter.