RT Journal Article SR Electronic T1 Measures of Efficacy Using G Proteins as Endpoints: Differential Engagement of G Proteins through Single Receptors JF Molecular Pharmacology JO Mol Pharmacol FD American Society for Pharmacology and Experimental Therapeutics SP 451 OP 452 DO 10.1124/mol.62.3.451 VO 62 IS 3 A1 David R. Manning YR 2002 UL http://molpharm.aspetjournals.org/content/62/3/451.abstract AB