Release Period of EPF-Like Substance(s) in Rat and Bovine Fertilized Ova

抄録

This study was undertaken to determine the release period of EPF-like substance(s) in in vivo fertilized rat ova and in vitro fertilized bovine ova. Using the rosette inhibition test, EPF-like substance(s) were detected in the culture media of in vivo fertilized rat and in vitro fertilized bovine ova a few hours after putative ovulation and insemination, respectively. In conclusion, it is confirmed that EPF-like substance(s) are released by in vivo fertilized rat ova and in vitro fertilized bovine ova a few hours after putative fertilization.