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Figure 1 .
Bi-directional migration of gastric epithelial cells during the proliferation/differentiation process.
Figure 2 .
Relation between antral epithelial cell proliferation and mucosal inflammatory cell infiltrate. Computer aided image analysis was used to evaluate acute (polymorphonuclear cells) and chronic (mononuclear cells) inflammation in gastric antral lamina propria from biopsy specimens. Thirty seven subjects, 20 H pylori positive and 17 H pylori negative, were included in the analysis. Consecutive sections (stained with haematoxylin and eosin) from those examined for cell proliferation were evaluated in each case. Mononuclear cells were automatically evaluated using microdensitometric software (Microscience Phoenix Inc.), whereas polymorphonuclear cells were evaluated using software for linear morphometry (Microscience Phoenix Inc.). The number of inflammatory cells counted was expressed as density (cells/mm2). A significant relation was found between total labelling index and both polymorphonuclear and mononuclear cell densities. (Spearman rank test R=0.42; p<0.05).
Figure 3 .
Apoptotic indexes in 20 H pylori positive and 17 H pylori negative dyspeptic patients. Epithelial apoptosis was assessed using the TUNEL method on antral glands from endoscopic biopsy specimens. The apoptotic index was expressed as the percentage of labelled cells to total cells in each case. Median values are shown by horizontal bars. No significant differences were found between the two groups (Mann-Whitney U test; p=0.07).
Selected References
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