This site is typical for the Golgi apparatus in epithelial cells but it has less or no expression in normal liver cells.125, 126, 127, 128, 129 However, in the presence of adenovirus infection, HBV or cancer, the expression level of GP73 in the bile duct cells is not changed significantly, but it is consistently high in liver cells, which increases the expression of GP73. This evidence concerns the gene GOLM1 and cancer.