Fig. 2.

Immunohistochemical stainings of Barrett’s epithelium. a HE staining, b CDX2, c PDX1, d CK7, e Higher magnification of red square in (d). f Higher magnification of black square of (d). Black arrow and red arrow in (d) indicate oral site and the anastomotic site, respectively. The Barrett’s epithelium was mostly developed near the esophagojejunal anastomosis (a, d and e). The Barrett’s epithelium strongly expressed CDX2 in (b), PDX2 in (c), and CK7 in the red square of (d, e). Small numbers of CK7-positive cells were noted at sites distant from the anastomotic site in each group in the black square of (d, f)