Effect of the aromatase inhibitor CGS-16949A on pregnancy and secretion of progesterone, estradiol-17 beta, prostaglandins E and F2alpha (PGE; PGF2alpha) and pregnancy specific protein B (PSPB) in 90-day ovariectomized pregnant ewes. - Weems,Y.S.; Bridges,P.J.; LeaMaster,B.R.; Sasser,R.G.; Ching,L.; Weems,C.W. (Prostaglandins Other Lipid Mediat, 2001)