If this protein is derived from harmless substances inside the cell, immune system components known as killer t cells will bypass the cell, considering it to pose no threat to the body.

如果该蛋白质来自于细胞中无害的物质，免疫系统中一种被称为T细胞杀手会认为它们对人体不构成威胁而将其放行。

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Objective:To investigate the effects of inhalation anesthetic on T lymphocyte subsets and natural killer(NK) cell activity.

目的：观察异氟醚和安氟醚吸入麻醉对病人T细胞亚群、自然杀伤细胞（NK细胞）的影响。

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Objective To evaluate the roles of natural killer (NK) cells and macrophages in the rejection of discordant xenografts in nude mice and T cell-reconstitution nude mice.

目的了解NK细胞和巨噬细胞在T细胞缺乏或T细胞成功重建的情况下对异种移植物排斥的作用。

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Two specific types of immune system cell that attack invaders - CD4 T-cells and natural killer cells - increased in number with age, with a higher rate of increase in women than in men.

BBC: Biological clue to why women live longer than men