RT Journal Article SR Electronic T1 M909 plays a key role in the activation of the progesterone receptor and also in the high potency of 13-ethyl progestins JF Molecular Pharmacology JO Mol Pharmacol FD American Society for Pharmacology and Experimental Therapeutics DO 10.1124/mol.108.054312 A1 Isabelle Petit-Topin A1 Nathalie Turque A1 Jerome Fagart A1 Michel Fay A1 Andre Ulmann A1 Erin Gainer A1 Marie-Edith Rafestin-Oblin YR 2009 UL http://molpharm.aspetjournals.org/content/early/2009/03/16/mol.108.054312.abstract AB