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AbstractSera of 223 dyspeptic patients with endoscopic findings of nonulcer dyspepsia (72%), gastric ulcer (15%) and duodenal ulcer (13%) were tested for antibodies against Helicobacter pylori with an enzyme immunoassay and an immunoblot technique using lysates of Helicobacter pylori cells as antigen source. One hundred and fifty-one (68%) sera were found to be positive for Helicobacter pylori IgG...
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