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

Yoshimi IKEMIZU; Kyoko KAWAHATA; Taichi GOTO; Jutaro TAKAHASHI; Yasuhisa YASUDA

doi:10.1262/jrd.41.197

Original Articles

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

Yoshimi IKEMIZU, Kyoko KAWAHATA, Taichi GOTO, Jutaro TAKAHASHI, Yasuhisa YASUDA

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Keywords: Early pregnancy factor (EPF), Release period, In vivo fertilized rat ovum, In vitro fertilized bovine ovum

JOURNAL FREE ACCESS

1995 Volume 41 Issue 3 Pages 197-201

DOI https://doi.org/10.1262/jrd.41.197

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Abstract

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.

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