When their essential biological function as antigen-binding molecules and informers for T cells was unveiled, an explanation of why MHC also acts as major histocompatibility antigens was provided.

随着其抗原结合分子及T细胞信使生物学功能本质的揭示，MHC为什么是主要组织相容性抗原的谜底就昭然于世。

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It can separate between what's part of yourself and what's foreign, and it does that by presenting, by recognizing antigens that are presented in the context of the major histocompatibility complex, MHC.

免疫系统可以识别出哪些是属于你的,哪些是外来的,它通过呈递和识别抗原达到目的,而抗原是存在于,主要组织相容性复合体中的

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