Restriction fragment length polymorphism of urease C and urease B genes of Helicobacter pylori strains isolated from Brazilian patients with peptic ulcer and chronic gastritis.

Abstract excerpt

The aim of the present work is to identify the presence of Helicobacter pylori bacterium in samples of gastric mucosa fragments, obtained by gastric biopsy, from Brazilian patients with peptic ulcer and chronic gastritis and also to determine differences among the prevalent strains in these two diseases by urease C and urease B genes amplification utilizing nested polymerase chain reaction (PCR) and PCR. We...

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