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