Figure 1From: Complete absence of M2-pyruvate kinase expression in benign pancreatic ductal epithelium and pancreaticobiliary and duodenal neoplasia Strong expression of M2-pyruvate kinase in a positive control (lung cancer) and benign pancreatic non-ductal epithelium: Immunohistochemical staining for M2-pyruvate kinase on formalin fixed lung adenocarcinoma (× 20), demonstrating a strong uptake of the stain. This was used as a positive control (top panel); Immunohistochemical staining for M2-pyruvate kinase on chronic pancreatitis (× 20), demonstrating moderate staining of benign non-ductal pancreatic epithelium (middle panel); Immunohistochemical staining for M2-pyruvate kinase on normal non-ductal pancreatic epithelium (× 20), demonstrating a strong uptake of stain (bottom panel).Back to article page