抗体或能中和病毒，或能活化补体系统以溶解病毒感染细胞。

The antibody can either neutralize the virus or activate the c system, which lyses virus-infected cells .

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通常当病毒感染细胞的时候，宿主的免疫系统能够抵御并最终消灭病毒。

Usually when viruses infect cells, the host immune system can fight to eventually clear the virus.

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主要功能是参与细胞免疫，可自然杀伤肿瘤细胞、病毒感染细胞等异常细胞。

The major function is involved in the cellular immunity, it is efficient in eliminating the abnormal cells, such as virus-infected cells and tumor cells.

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Hepatitis is a virus that specifically affects the liver, so viruses are often specific to certain kinds of cells.

肝炎病毒就可以特异性的感染肝细胞,因病毒通常都有细胞特异性

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So, this is a cell that's infected with a microorganism, it's infected with a virus, let's say it's infected with influenza virus.

这是一个感染了微生物的细胞,它感染了一种病毒,就说是感染了流感病毒吧

耶鲁公开课 - 生物医学工程探索课程节选

So, they don't start killing all the cells in your respiratory system; they only kill the cells that are harboring the virus.

所以它们不会杀死所有呼吸系统内的细胞,只杀死那些被病毒感染的细胞

耶鲁公开课 - 生物医学工程探索课程节选