An autoimmune disease results when the body's system for fighting infection (the immune system) turns against a part of the body.

自体免疫疾病是因身体(免疫系统)对抗感染时转而攻击身体的某一部分而产生的。

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Rather than being caused by an overenthusiastic immune system, milk intolerance, for example, results from a lack of the enzyme the body needs to break down lactose, the main sugar in milk.

举例来说，不耐乳症不是由免疫系统的过分热情引起的，而是缺乏一种酶的结果，而身体需要这种酶来分解牛奶中主要的糖——乳糖。

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Normal cells also produce similar protrusions as part of a healthy physiological process that allows cells to move through body tissues during an immune response.

健康细胞表面也会有类似的突出物，但它们是机体免疫反应过程中使得细胞可以在机体组织中移动的正常生理过程的组成部分。

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The institute has scoured the results of international studies to find antigens substances that provoke an immune response in the body that could be a potent weapon against malaria.

VOA: standard.2010.01.20

The other thing that I want to do today is try to tie this discussion on vaccines a little bit more closely with what we talked about last week, in terms of what happens inside your body when you receive a vaccine or when you're exposed to an antigen, and how the immune system actually responds to that.

还有就是,我希望可以,把今天关于疫苗的讨论,与我们上周讲过的内容,结合得更紧密一些,当接种疫苗,或者是接触抗原时,人体将会发生怎样的变化,以及免疫系统对疫苗产生何种应答

耶鲁公开课 - 生物医学工程探索课程节选

And the transplantation of foreign tissue could provoke an immune response from the body which could reject the new cornea.

BBC: Human cornea grown in lab

The hope was that exposure to the genes would prompt an immune response in the body so that cells containing HIV virus would be recognised and destroyed.

BBC: NEWS | Health | Merck abandons HIV vaccine trials

When a person gets infected with a virus, the body typically mounts an immune response to it.

CNN: 1918 flu survivors share memories as research continues