An example of that is, of course, insulin which is produced by cells of the pancreas and acts on cells all over the body.

这种信号传递的例子,就是胰脏细胞产生的胰岛素,作用于全身各处的细胞

耶鲁公开课 - 生物医学工程探索课程节选

And this is what's characteristic of smallpox, is that as the virus spreads through your body, it particularly, it particularly affects cells of your skin.

这是天花的特征,当病毒传遍全身时,它特别的,特别地作用于皮肤细胞

耶鲁公开课 - 生物医学工程探索课程节选