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Related Experiment Video

Updated: Jun 11, 2026

Mouse Embryonic Development in a Serum-free Whole Embryo Culture System
08:55

Mouse Embryonic Development in a Serum-free Whole Embryo Culture System

Published on: March 1, 2014

Early embryo development in a sequential versus single medium: a randomized study.

Goedele Paternot1, Sophie Debrock, Thomas M D'Hooghe

  • 1Leuven University Fertility Centre, UZ Gasthuisberg, Campus Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium. goedele.paternot@uzleuven.be

Reproductive Biology and Endocrinology : RB&E
|July 9, 2010
PubMed
Summary
This summary is machine-generated.

Single culture medium improved embryo utilization rates in IVF compared to sequential media, though good quality embryo numbers remained similar. This finding may positively impact cumulative pregnancy rates.

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Related Experiment Videos

Last Updated: Jun 11, 2026

Mouse Embryonic Development in a Serum-free Whole Embryo Culture System
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Published on: March 1, 2014

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Ex Utero Culture of Mouse Embryos from Pregastrulation to Advanced Organogenesis
07:14

Ex Utero Culture of Mouse Embryos from Pregastrulation to Advanced Organogenesis

Published on: October 19, 2021

Area of Science:

  • Reproductive Medicine
  • Embryology
  • In Vitro Fertilization (IVF)

Background:

  • Embryo culture conditions significantly impact IVF success rates.
  • Sequential media are often believed to be superior to single media for embryo development.
  • Limited scientific data exists to definitively compare these media types.

Purpose of the Study:

  • To compare embryo quality between sequential and single culture media in IVF.
  • To evaluate the impact of different culture media on embryo development and quality metrics.
  • To provide scientific data addressing the common belief in sequential media's superiority.

Main Methods:

  • A randomized study included 147 patients under 36 undergoing their first or second IVF/ICSI cycle.
  • Embryos were randomly assigned to either sequential (Group A) or single (Group B) culture media.
  • Embryo quality was assessed on days 1, 2, and 3 using parameters like blastomere number and fragmentation.

Main Results:

  • Day 1: Higher cytoplasmic halo percentage in single medium (Group B, 46%) vs. sequential (Group A, 32%).
  • Day 2 & 3: Group B showed higher blastomere numbers and unequal blastomere percentages.
  • Good quality embryo (GQE) numbers were comparable; however, embryo utilization rate was higher in Group B (56%) than Group A (49%).

Conclusions:

  • Single culture medium demonstrated a significantly higher embryo utilization rate compared to sequential medium.
  • No significant difference in the number of good quality embryos was observed between the two media types.
  • Results suggest potential positive effects of single medium on cumulative cryo-augmented pregnancy rates.