We've learned how to identify and catalog cells according to the composition of proteins on the surface and those proteins that distinguish a cell are often called marker proteins.

我们学会了如何按照表面的蛋白成分,来识别并分类细胞,而这些用来区别细胞的蛋白,通常称为标记蛋白

耶鲁公开课 - 生物医学工程探索课程节选

So, for example, if you were interested in some protein involved in cancer, you could tag it with GFP.

例如，如果你对和癌症有关的,蛋白质感兴趣，你可以用GFP标记它。

麻省理工公开课 - 化学原理课程节选