The genes in question control a type of white blood cell known as natural killer cells, or NK cells.
斯坦福大学的研究者们提出的这项假设发人深思，甚至出人意料。 他们所说的基因控制了一种被称为自然杀手细胞(NK细胞）的白血球细胞。
Different types of receptors expressed by natural killer (NK) cells may selectively recognize their specific ligands on some other cells and provide self-regulatory signals to control NK responses.
自然杀伤细胞通过其表达的不同类型的受体选择性识别细胞表面的相应配体，提供自然杀伤细胞反应的自我调节信号。
The factor was released from immune cells called natural killer (NK) cells in the liver, but only if another immune cell, the macrophage, was present.
该因子由肝脏中被称为自然杀伤(NK)细胞的免疫细胞释放，但是只有当另一种免疫细胞，巨噬细胞存在时才释放。
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