Lymphocyte function in the cellular immune system features both afferent (receptor) and efferent (effector) components.

细胞免疫系统的传入(受体)和传出(效应器)功能都受到淋巴细胞功能的影响。

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Natural killer (NK) cells are an important component of the innate cellular immune system which provide a first line of defence against viral infections.

自然杀伤（NK）细胞是天然细胞免疫系统的重要组成部分，是防御病毒感染的第一道防线。

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The job is particularly difficult in the case of chlamydiae because these bacteria have special ways of protecting themselves from attack by the cellular branch of the immune system.

这项工作在对抗披衣菌上，更是困难，因为披衣菌拥有特殊的自保之道，可以躲掉免疫系统当中细胞免疫的攻击。

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Here, I've just picked a couple of the pictures that I showed you last time when we were talking about cell communication in the immune system, What happens after the vaccine is introduced into your body is that it initiates cellular events.

我挑选了,我上次给你们展示的几幅图片,当我们讨论到,免疫系统中的细胞沟通时,讲到过当人体接种疫苗之后,能够触发,细胞活动

耶鲁公开课 - 生物医学工程探索课程节选