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Expression of 120 kilodalton protein and cytotoxicity in Helicobacter pylori.
  1. J E Crabtree,
  2. N Figura,
  3. J D Taylor,
  4. M Bugnoli,
  5. D Armellini,
  6. D S Tompkins
  1. Department of Medicine, St James's University Hospital, Leeds.

    Abstract

    Antral biopsy culture supernatants from 14 subjects with chronic gastritis, known to have IgA antibodies to the 120 kilodalton protein, showed positive recognition of this antigen in western blots against a cytotoxin positive strain of Helicobacter pylori but gave negative reactions with two cytotoxin negative strains. Control immunoblots with culture supernatants from 13 non-responders to the protein were all negative. This indicates a direct association between expression of the 120 kilodalton protein in H pylori strains and cytotoxicity.

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