in contrast , serial injections of the mixtures of pge2 and pgf2 alpha 0 , 2 , 4 , 6 , 8 , 10 and 12 h after simultaneous injection of hcg and indomethacin completely restored the indomethacin-blocked ovulation , suggesting that the prostaglandins mediate the action of hcg on ovulation both in the earlier and later stages of the preovulatory process .
C0012472
pge2
C0033554
prostaglandins