class ii genes中文什么意思

《英文msh詞典》Class II Genes
[同義詞] Class II Genes
[主題詞] Genes,MHC Class II
[中文釋義] Ⅱ類基因
[英文釋義] Genetic loci in the vertebrate major histocompatibility complex that encode polymorphic products which control the immune response to specific antigens. The genes are found in the HLA-D region in humans and in the I region in mice.

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mhc is an extended cluster of genes with extraordinary polymorphism, which consists of three classes of genes ( class i, class ii and classiii ) . they are different from each other in their structure, expression, mode of evolution and so on . class ii genes are further divided into two subclasses and the mhc genes spread over nearly all vertebrates extensively
mhc基因是一個(gè)高度多態(tài)的基因群，主要包括三大類基因?類(class)、類(class)和類(class)基因，它們無論在結(jié)構(gòu)組成、表達(dá)組織的類型、刺激特定t細(xì)胞的類群及長(zhǎng)期進(jìn)化等方面都有所不同；類基因還可進(jìn)一步分為a、b兩個(gè)亞類：各類基因廣泛分布于各種脊椎動(dòng)物體內(nèi)。
besides the immunological functions, mhc genes also play important roles in many other respects . the polymorphism of mhc genes, especially of mhc class ii genes, is the most essential property . moreover, mhc genes are usually used to analyze the genetic structure and genetic variation in conservation genetics
mhc除了具有免疫功能外，還在其它許多方面起作用：mhc基因的多態(tài)性是最受關(guān)注的特征，尤其是類基因，因此可將mhc位點(diǎn)作為一種遺傳標(biāo)記，用于種群遺傳結(jié)構(gòu)和變異性的研究，這對(duì)于一些瀕危物種的遺傳保護(hù)起到重要的作用。

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