Virulence Genes of Helicobacter pylori Increase the Risk of Premalignant Gastric Lesions in a Colombian Population

Table 1

Primer sequence for polymerase chain reaction amplification.

Genes and regions		Sequence (5′-3′)	Size (bp)
vacA s1/s2	VAI-F	ATGGAAATACAACAAACACAC	259 (s1)/286 (s2)
	VAI-R	CTGCTTGAATGCGCCAAAC
vacA m1/m2	VAG-F	CAATCTGTCCAATCAAGCGAG	570 (m1)/645 (m2)
	VAG-R	GCGTCAAAATAATTCCAAGG
cagA	cagA-F	GATAACAGGCAAGCTTTTGAGG	349
	cagA-R	CTGCAAAAGATTGTTTGGCAGA