Expression of cytokeratins in Helicobacter pylori –associated chronic gastritis of adult patients infected with cagA+ strains: An immunohistochemical study

Figure 4 CK20 immunoreactivity in antral mucosa of patients with cagA+ H pylori chronic gastritis (A), non-H pylori chronic gastritis (B) and control subjects with normal gastric mucosa (C). In the cagA+ H pylori chronic gastritis, CK20 expression was decreased in upper foveolar epithelium in comparison to non-H pylori chronic gastritis and control subjects with normal gastric mucosa. Numerous CK20 strong immunoreactive endocrine cells could be observed (() in the glandular epithelium. Original magnification: x20 (A-C)