Pathological significance and molecular characterization of the vacuolating toxin gene of Helicobacter pylori

Abstract excerpt

Some strains of Helicobacter pylori are known to produce an extracellular cytotoxin that causes vacuolization in various mammalian cells. In this study, we found that concentrated culture supernatants from four Helicobacter strains isolated from patients infected with the bacterium, but having normal gastric mucosa, lacked cytotoxic activity. We also show that a higher percentage of strains isolated from patients...

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