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Fig. 1 | BMC Gastroenterology

Fig. 1

From: Helicobacter pylori vacA, cagA and iceA genotypes in dyspeptic patients from southwestern region, Saudi Arabia: distribution and association with clinical outcomes and histopathological changes

Fig. 1

Agarose gel electrophoresis of the PCR-based genotyping amplified products of (a) cagA gene (349 bp). Lanes; M; 100 bp DNA ladder (Solis Biodyne). Lanes 1, 2, 3, 5, 7, 9, 11, and 15 are cagA positive while remaining lanes are negative for this gene. b cag empty site (550 bp). Lanes; M; 100 bp molecular DNA marker (Cleaver Scientific Ltd.). Lanes 1, 2, 4, 5, 7, 8 are cagA empty site positive while the remaining lanes are negative for this site. c iceA1 gene (247 bp). Lanes; M; 100 bp molecular DNA marker (Cleaver Scientific Ltd.). Lanes 1, 2, 3, 4, 5, 7, 8, 9, 11, 13, 14 and 15 are iceA1 positive while remaining lanes are negative for this gene. Note that PCR bands in lanes 4 and 11 are faint. d iceA2 gene (229 or 334 bp). Lanes; M; 100 bp molecular DNA marker (Cleaver Scientific Ltd.). Lanes 1, 4, 6, 10, 11, and 12 are iceA2 positive while lanes 2, 3, 5, 7–9, 13–15 are negative for this gene. Note that PCR products in lanes 1, 6 and 12 are of 334 bp size, while lanes 4, 10 and 11 have 229 bp PCR products

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