Figure 1.

Serial sections of formalin fixed paraffin embedded biopsy tissue from two patients with gastric intestinal metaplasia without carcinoma. Haematoxylin-eosin staining (A, D), alcian blue/high iron diamine staining (B, E), and immunoperoxidase assay with the monoclonal antibody mAb Das-1 (C, F); (A-C) is from the same patient and (D-F) from the second patient. mAb Das-1 stained both goblet cells (shorter arrow) and metaplastic non-goblet cells (longer arrow) in the glands (C), suggesting colonic phenotype (incomplete type); While GIM is clearly evident with the presence of goblet cells (D, E) in the second patient, but mAb Das-1 did not stain the glands including goblet cells (F). The arrow shows the unstained goblet cells suggesting complete phenotype or small intestinal phenotype (original magnification × 160 for each part)[106].