Lysozyme is a protein that is part of the human immune system; when functioning properly, it punctures the cell wall of an invading bacterium and destroys it.

溶解酵素是一种蛋白质，它是人类免疫系统的一部分；由于功能正常，它可以刺破入侵细菌的细胞壁并毁灭它。

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As the cell count drops, the immune system begins to fail and opportunistic infections such as tuberculosis take hold.

随着细胞数量的减少，免疫系统开始失效，之后，像肺结核这样的感染则会趁虚而入。

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In the new study on mice, researchers found that inhaling nanotubes affected the function of t cells, a type of white blood cell that organises the immune system to fight infections.

在对小鼠的这项新研究中，研究人员发现，吸入碳纳米管影响了T细胞的功能，T细胞是一种组织免疫系统抵抗感染的白血细胞。

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This is a way for the immune system to recognize things that are going wrong inside the cell protected from antibodies.

这是免疫系统识别,抗体不能识别的细胞内病变的方法

耶鲁公开课 - 生物医学工程探索课程节选

The immune response is directed at killing this cell.

免疫反应直接杀死了那个细胞

耶鲁公开课 - 生物医学工程探索课程节选

It's the way, for example, that foreign molecules or antigens get presented to cells of your immune system in order to start the process of making an immune response, so sometimes a cell/cell interaction.

通过这种方式,外源分子,或者说抗原,进入到免疫系统的细胞中后,就会开启免疫反应过程,有时候就是细胞之间的相互作用

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But some tumor cells have proteins that bind to the PD-1 receptors, shutting the immune cell down.

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For a T cell to become active, it must receive signals from another part of the immune system called an antigen-presenting cell.

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It neutralises potentially harmful oxygen molecules, boosts the immune system and rids the cell of toxins.

BBC: Garlic 'fights malaria'