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Figure 1 | Annals of Clinical Microbiology and Antimicrobials

Figure 1

From: Pathogenicity island cag, vacA and IS605 genotypes in Mexican strains of Helicobacter pylori associated with peptic ulcers

Figure 1

Detection of the cagA gene by Southern blot hybridization. (A) Hybridization for 50 genomic DNA of the isolates and 4 H. pylori reference strains as positive and negative controls, as well as a control the plasmid with the intra-cagA gene cloned, and distilled water as an internal-reaction negative control. (B) Schematic representation of the result of hybridization: circles continuous and discontinuous for positive and negative hybridization, respectively. Abbreviations: CTLS, controls; NPU, non-peptic ulcers; NBPU, non-bleeding peptic ulcers, and BPU, bleeding peptic ulcers.

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