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Related Concept Videos

Gastrulation01:56

Gastrulation

Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata will form...

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Optimized Ex-ovo Culturing of Chick Embryos to Advanced Stages of Development
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Endpoints in the development of chick embryos.

R Bellairs1

  • 1Department of Anatomy and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK.

Toxicology in Vitro : an International Journal Published in Association with BIBRA
|August 25, 2010
PubMed
Summary

Non-mammalian embryos, like the chick embryo, offer advantages for teratological studies. Their direct exposure to reagents and ease of manipulation make them valuable alternatives to mammalian models.

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Area of Science:

  • Developmental biology
  • Toxicology
  • Comparative embryology

Background:

  • Mammalian embryos are standard for teratological studies.
  • Non-mammalian embryos present unique advantages for research.
  • Direct embryonic exposure bypasses maternal and placental factors.

Purpose of the Study:

  • To highlight the utility of non-mammalian embryos in teratological research.
  • To focus on the chick embryo as a model system.
  • To discuss critical embryogenesis stages and culture techniques.

Main Methods:

  • Comparative analysis of mammalian and non-mammalian embryos.
  • Focus on chick embryo as an experimental model.
  • Review of critical embryogenesis stages and culture methods.

Main Results:

  • Non-mammalian embryos allow direct assessment of teratogenic effects.
  • Xenopus and chick embryos are larger at early stages than mouse embryos.
  • Chick embryos are identified as a practical model for teratological investigations.

Conclusions:

  • Non-mammalian embryos, particularly the chick, are advantageous for teratological studies.
  • Direct exposure and ease of manipulation simplify experimental design.
  • Understanding critical developmental stages and culture techniques is essential for effective use.