c-fos is Overexpressed in the Dysplastic Bile Ducts and Cholangiocarcinoma in Association with Cell Proliferating Activity in Hamster Cholangiocarcinoma Model

¹School of Veterinary Medicine, Kangwon National University, Chuncheon, kangwon(Do), South Korea, ²College of Veterinary Pathology, Seoul National University, Seoul, South Korea, and ³Korean FDA, Seoul, South Korea