PARK7 and pancreatic serous cystadenoma: We performed immunohistochemical (IHC) analyses on the liver tissue sections of patients with chronic HBV or hepatitis C viral (HCV) infection, primary biliary cirrhosis (PBC) and primary sclerosing cholangitis (PSC) by staining CK19 (cytokeratin19, a specific LPC marker) and DJ-1.