Figure 3

Different expression patterns of CEACAM7 and CEA in gastric non-neoplastic lesions and gastric carcinomas. Consecutive sections were used for analysis. No immunoreaction for CEACAM7 was detected in normal mucosa (A). CEACAM7 was localized on the apical surface of chronic atrophic gastritis (C), low grade GIN (E) and high grade GIN (G). CEA was localized on the apical luminal surface of normal mucosa (B), chronic atrophic gastritis (D), low-grade GIN(F), and high-grade GIN (H). Both CEACAM7 (I) and CEA (J) was localized on the whole surface of gastric cancerous cells. (DAB as chromogen, counterstained with Harris hematoxylin, 200X).