TABLE 1.

Genotypes and phenotypes of different H. pylori strains

Strain	Genotype		Phenotype
	vacA	cagA	Vacuolation
ATCC 43504	ND	+b	+
93-1184	s2-m2	−	−
SS1	s2-m2	+	−
SPM326/IL-8+	s1b-m1	+	+
SPM326/IL-8−	s1b-m1	+	+

^aND, not determined. 

^bcagA PCR was performed as described by Tummuru et al. (28).