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Helicobacter pylori (H. pylori) in Gastric Mucosa of Children with Abdominal Complaints: Immunohistochemistry Detects Antigen‐Reactive Corpus Mucosa Cells

Previous morphological and serological studies of gastric Helicobacter pylori (H. pylori) colonization among Estonian children with abdominal complaints, as well as among populations of schoolchildren, have shown a high prevalence of H. pylori (49–60%). Based on published data concerning the high specificity and sensitivity of immunohistochemical detection of H. pylori, we examined the prevalence of H. pylori in gastric biopsy specimens of Estonian children by different localization and morphological type of gastritis comparing Giemsa staining with immunohistochemistry.