%0 Journal Article %T Can Adding Constitutive Receptor Activity Redefine Biased Signaling Quantification? %J - %D 2019 %R https://doi.org/10.1016/j.tips.2019.01.002 %X Biased signaling, the differential activation of distinct signaling pathways, is currently at the center of pharmacology. Reliable characterization of biased ligands requires robust scales applicable to all ligand classes: agonists, neutral antagonists, and inverse agonists. To this end, constitutive receptor activity should be included in the models %U https://www.cell.com/trends/pharmacological-sciences/fulltext/S0165-6147(19)30002-1