TABLE 1.

Compounds selected for the study

Compound	Structure	Classification for β2-AR
(-)-Epinephrine		Endogenous full agonist
(-)-Norepinephrine		Endogenous partial agonist
Dopamine		Endogenous weak partial agonist
(-)-Isoproterenol		Synthetic full agonist
Salmeterol		Synthetic partial agonist
Terbutaline		Synthetic partial agonist