Evidence of clonal variants of Helicobacter pylori in three generations of a duodenal ulcer disease family.

Abstract excerpt

Nine members of a family with a high incidence of duodenal ulcer disease were studied by interview, examination of hospital records, endoscopy, and antral biopsy. Helicobacter pylori was confirmed by CLO test, histology and culture. DNA extraction from pure isolates of H pylori was possible in six family members and strain typing was performed by restriction fragment length polymorphism. DNA restriction digestion...

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