Immunohistochemical analysis of the Wnt/β-catenin signaling pathway in pancreatic neuroendocrine neoplasms

Figure 1 β-catenin expression in the pancreas and pancreatic neuroendocrine neoplasms (original magnification 200 ×). A: Strong membranous β-catenin staining in the exocrine pancreas and weak membranous staining in pancreatic islets (black arrows); B: Weak membranous β-catenin staining in one pancreatic neuroendocrine neoplasm; C: Strong membranous β-catenin staining in another pancreatic neuroendocrine neoplasm.