These experimental results showed that exogenous insulin can cause ballooning degeneration of liver cells, then reduces the content of conjugated bile acid and promotes gallstone formation.
上述实验结果表明，外源性胰岛素可引起肝脏的空泡变性，进而使胆汁中结合胆汁酸含量降低，促进胆石形成。
2
The presence of exogenous surface contamination, including dirt, grease, free iron from contact with steel tooling, and so forth, may interfere with the formation of the passive film.
外生的表面污染，包括：尘土、油脂、来自钢铁加工的游离铁等等，可以影响到钝化膜的生成。
3
Therefore, it is concluded that regulation of callus formation and differentiation of the calli by exogenous hormone is closely related to some endogenous factors and external condition.