Unfortunately, these same sequences of amino acids are also found on the body's own tissues (a copy or mimic of the foreign protein segment).

不幸的是，同样的氨基酸序列，也存在于人体自身的组织中(与外源蛋白的某段相同或相仿)。

youdao

So, how do those antibodies arrive?Well, we believe that it's some foreign protein that the body is reacting to. See,that's what antibodies are for.

好的，我们相信，它是身体对一些外源蛋白质所做出的反应。

youdao

The plant's foreign protein expression system has made a great progress.

植物外源蛋白表达系统已取得较大进展。

youdao

Then, your muscle cells would start producing Hepatitis B surface antigen and your immune system recognizing that's a foreign protein would start responding to it.

于是,肌肉细胞将会,开始制造乙肝表面抗原,然后免疫系统就会识别出,那是外来蛋白质并且产生免疫应答

耶鲁公开课 - 生物医学工程探索课程节选

That's making the cell look foreign because some of that foreign protein is on the surface with MHC1.

这使得整个细胞亦被视为外源物,因为某些外源蛋白,和MHC1共同出现在细胞表面

耶鲁公开课 - 生物医学工程探索课程节选

He hooked up a fragment of the mutant protein to a larger protein from a giant sea snail (the keyhole limpet) that looks foreign and can rev up the immune system.

FORBES: Magazine Article