An alternative means of correlating requests to access a particular calculator total is to make that correlation a formal part of the calculator service interface.
The correlation is with the genes of what is known as the major histocompatibility complex (MHC). This region of the genome encodes part of the immune system.
这种联系存在于名为“主要组织相容复合体”(MHC)的基因中，这部分基因含有部分免疫系统的编码。
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An alias is a part of a message that represents the correlation property.