Fig. 4
From: Correctable biliary atresia and cholangiocarcinoma: a case report of a 63-year-old patient
a Hematoxylin-eosin (HE) staining. Pathological assessment of the tumor specimens obtained by endoscopic biopsy reveal adenocarcinoma (× 400). b p53 immunohistochemical staining. The tumor cells are positive for p53 staining (× 400)