Fig. 6From: Adenocarcinoma arising from widespread heterotopic gastric mucosa in the cervicothoracic esophagus: a case reportResults of immunohistochemical analysis. a MUC5AC staining was positive mainly in the invasive area. b MUC6 staining was positive mainly in the invasive area, as with MUC5AC. c MUC2 was partially positive in the surface layer of the tumorBack to article page