specific antisera and iodinated tracers , as well as strict conditions of sample storage pg extraction and purification , were used to estimate prostaglandins ( microgram/ml ) in the semen of fertile men : 19-oh-pge ( 1 + 2 ) ( 350 ) , 19-oh-pgf-alpha ( 22 ) , pge-2 ( 15 ) , pge-1 ( 6.2 ) , pgf-2 alpha ( 2.3 ) , pgf-1 alpha ( 1.3 ) , 6-keto-pgf-1 alpha ( less than 1 ) , pgd-2 , 13,14-dihydro-15-keto-pgf alpha and txb-2 ( less than 0.1 ) .
C0033554
prostaglandins
C0033558
pgd