Purpose:To detect the effect and mechanism in hepatocarcinogenesis induced by HBV and aflatoxin B 1 (AFB 1) in tree shrews, two animal experiments had been done.

• 目的 :探讨乙肝病毒 (HBV)和黄曲霉毒素B1(AFB1)在肝癌形成中的作用及机理。