这只是对我们的免疫系统试图防御的潜在外来入侵者的分类介绍。

Just an introduction to the classes of potential foreign invaders that our immune system tries to defend us against.

youdao

我们的免疫系统是要保护身体免受寄生虫、细菌和其它外来物质的侵犯。

Our immune system is meant to protect the body from invading parasites, bacteria and other foreign substances.

youdao

当小鸭破壳而出，科学家们用向每只小鸭注射外来细胞的方式挑战他们的免疫系统。

When the eggs hatched, the scientists challenged the immune system of each duckling by injecting it with foreign cells.

youdao

So, just an introduction to the classes of potential foreign invaders that our immune system tries to defend us against.

所以 我只是简单介绍几类,免疫系统试图抵御的潜在外来侵略者

耶鲁公开课 - 生物医学工程探索课程节选

Then, your muscle cells would start producing Hepatitis B surface antigen and your immune system recognizing that's a foreign protein would start responding to it.

于是,肌肉细胞将会,开始制造乙肝表面抗原,然后免疫系统就会识别出,那是外来蛋白质并且产生免疫应答

耶鲁公开课 - 生物医学工程探索课程节选