This is commonly used in the immune system as well, but it's a way of amplifying a signal.

免疫系统也常使用这种方法,但这主要是一种放大信号的方式

耶鲁公开课 - 生物医学工程探索课程节选

They're small molecules that - whose principal function in the body is to carry signals from one cell in the nervous system to another.

它们都是小分子,在体内主要功能是在,神经系统内将信号,从一个细胞传导到另一个细胞

耶鲁公开课 - 生物医学工程探索课程节选

The nervous system, the endocrine system which we'll start talking about a little bit today is the system that's responsible for sending signals back and forth between tissues of your body.

还有神经系统,和我们今天将要提到的内分泌系统,内分泌系统主要负责,在体内各组织之间传递信号

耶鲁公开课 - 生物医学工程探索课程节选