Ursodeoxycholic acid is a kind of hydrophilic bile acid.It can hinder hydrophobic bile acid from its hepatotoxicity to liver and the damage of cytotoxic T lymphocyte(CTL) to its target cells.

• 熊去氧胆酸是一种亲水性胆汁酸,能阻止疏水性胆汁酸的细胞毒作用,抑制细胞毒T细胞(CTL)对靶细胞的攻击作用。