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Effects of in-vitro fertilization, culture, freezing and transfer on the ability of mouse embryos to implant and survive.

Authors
  • Massip, A
  • Van der Zwalmen, P
  • Puissant, F
  • Camus, M
  • Leroy, F
Type
Published Article
Journal
Journal of reproduction and fertility
Publication Date
May 01, 1984
Volume
71
Issue
1
Pages
199–204
Identifiers
PMID: 6547181
Source
Medline
License
Unknown

Abstract

The survival after transfer of frozen-thawed mouse blastocysts obtained from culture of in-vitro fertilized oocytes or 1- and 2-cell ova was compared. About 10% of transferred embryos developed to term in each group and there was no difference between embryos fertilized in vitro or in vivo. In addition to embryonic loss due to transfer, in-vitro cultivation and freezing reduced the proportion of fetuses considered viable at Day 15 of pregnancy (29.8 versus 50.7% and 26.3 versus 50.7% respectively). When used together these procedures had an additive effect on fetal wastage (18.4 versus 50.7%). In-vitro culture also entailed a significant increase of resorbing implantation sites (10.2 versus 4.3%). The re-expansion rate after freezing and thawing of blastocysts grown in vitro was paradoxically greater than that of blastocysts grown in vivo (85.8 versus 54.6%).

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