What insulin is doing inside your body is acting as a ligand for insulin receptors which stimulate certain kinds of cellular responses.

胰岛素在体内的功能就是作为,胰岛素受体的配体,刺激产生某种细胞效应

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And those words mean different things: immunogenic means that it stimulates your immune system for a response; pathogenic means that it causes a disease.

这两个词有不同的意义,免疫效应是指,刺激免疫系统产生免疫应答,致病性意指它能使你患病

耶鲁公开课 - 生物医学工程探索课程节选