Figure 2.

Expression of pancreatic-duodenal homeobox 1 (PDX1), pepsinogen I, and mucins MUC6 and MUC5AC in serial sections through pseudopyloric glands. (A) PDX1 is expressed in pseudopyloric glands surrounding carcinoma cells. Arrows indicate PDX1 expression in the nuclei of pseudopyloric gland cells. Arrowheads indicate PDX1 positive carcinoma cells. (B) MUC6 positive reactivity is also apparent. (C) No MUC5AC is expressed in the pseudopyloric glands. (D) The presence of pseudopyloric glands was confirmed by antihuman pepsinogen I monoclonal antibody staining. Original magnification: A, C, 400×; B, D, 200×.