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。
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.
MICB是自然杀伤细胞活化受体(NKG2D)的一种应急诱导的配体，它对于NK细胞杀伤病毒感染细胞及肿瘤细胞至关重要。
MICB is a stress-induced ligand of the natural killer (NK) cell activating receptor NKG2D and is critical for the NK cell killing of virus-infected cells and tumor cells.
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