<p>A. PAS (pink) showed extensive mucin production deep into affected glands while surrounding normal glands only had staining at the tops of glands. B. Immunolabeling for phosphohistone H3 as an M phase marker. The proliferative zone in affected glands was shifted toward the base of the glands. C. Immunolabeling for TFF2 (brown) showed positive cells near base of affected fundic glands while normal glands had expression in the normal mucous neck region. Arrows, staining in affected glands; arrowheads, staining in normal glands. Size bars, 50 µm.</p
