Genotyping of Helicobacter pylori Virulence Genes cagA and vacA: Regional and National Study

Figure 8

PCR amplification of vacA alleles and cagA: M: 100 bp ladder; lanes 1–3, 5, and 6: vacA+/cagA−; lane 4: vacA−/cagA−; lane 1: s1m2 genotype; lane 2: s1m2 genotype; lane 3: s2m2 genotype; lane 5: s1m1 genotype; lane 6: s2m2 genotype.