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Differential expression of NHE-1 expression in normal and esophageal cancer tissue specimens, which were immunostained with anti-NHE-1 antibody and then viewed and categorized as positive- or negative-stained in each case. A, Normal esophageal squamous cell epithelium; B and C, Esophageal adenocarcinoma. Magnification ×200 (the insert, ×400).
