And things have changed over the last generation or two.

VOA: standard.2010.07.14

If you have two different ligands stimulating two different receptors, and one causes activation of this enzyme and generation of cyclic AMP, cyclic AMP levels will start to rise.

如果有两种不同的配体,刺激不同的受体,一种能够活化酶,并促进生成cAMP,cAMP的水平就会升高

耶鲁公开课 - 生物医学工程探索课程节选

If you have two different ligands stimulating two different receptors, and one causes activation of this enzyme and generation of cyclic AMP, cyclic AMP levels will start to rise.

如果有两种不同的配体,刺激不同的受体,一种能够活化酶,并促进生成cAMP,cAMP的水平就会升高

耶鲁公开课 - 生物医学工程探索课程节选