Fig. 3From: Adenosquamous carcinoma of the ampulla of Vater: a case report and literature reviewHistopathological and immunohistochemical findings. a Hematoxylin and eosin staining. b CK5/6 was strongly expressed in the squamous cell carcinoma component. c CK7 was expressed in the adenocarcinoma component (original magnification ×15)Back to article page