They might ingest extracellular antigen, presented pieces of it on their cell surface in the context of MHC-2.

它们可以吞噬胞外抗原,根据细胞表面的,主要组织相容性抗原-2

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Yeast cells were grown in large numbers with this plasmid inside, they expressed the plasmid and so you made Hepatitis B surface antigen not in people but in cell culture where it was not normally formed.

体内携带这种质粒的酵母细胞大量增殖,它们表达质粒,因此,乙型肝炎表面抗原不是在人体内,而是在细胞培养环境下,以非正常方式形成的

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But this antigen presenting cell is more likely a professional antigen presenting cell, or a subset of cells of your immune system that are specialized in ingesting foreign particles and displaying their contents to the rest of the immune system.

但这种抗原呈递细胞更加类似于,专职抗原呈递细胞,或者是体内免疫细胞中的一个亚群,专门从事吞噬异己物质,并告知免疫系统的其他细胞的工作

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Now, for antibody production it is still a T-cell that recognizes the antigen presenting cell.

现在,抗体的产生,仍是源于T淋巴细胞识别出抗原呈递细胞

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Because it has MHC-1, your MHC-1 on it, this T-cell recognizes that it's one of your cells but it has a foreign antigen associated with it.

因为该细胞上有MHC-1,T细胞将这些细胞识别为自身细胞,但这些细胞带有异己抗原

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Immune cells recognize it, and they recognize it by a very special form of receptor-ligand interaction where the ligand is MHC1 with the foreign antigen and the receptor is a receptor called the T-cell receptor complex.

免疫细胞识别出染病细胞,通过一种特殊形式的,受体配体协作机制识别出来,其中的配体是同,外源抗原共同出现的MHC1,而这其中受体是T细胞受体复合体

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