various pgs and pg metabolites displaced [ 3h ] pgf from the receptors in the following decreasing order : pgf-2 alpha greater than 13 , 14-dihydro-pgf-2 alpha = 13,14-dihydro-15-keto pgf-2 alpha greater than pgd-2 greater than pgf-1 alpha = pge-2 greater than pge-2 beta greater than pge-1 .
C0033554
pg
C0033558
pgd