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Related Concept Videos

Gastrulation01:56

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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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Related Experiment Video

Updated: Jun 29, 2026

Primary Endodermal Epithelial Cell Culture from the Yolk Sac Membrane of Japanese Quail Embryos
11:53

Primary Endodermal Epithelial Cell Culture from the Yolk Sac Membrane of Japanese Quail Embryos

Published on: March 10, 2016

Aptly named visceral endoderm.

Claudio D Stern1

  • 1Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK. c.stern@ucl.ac.uk

Developmental Cell
|October 16, 2008
PubMed
Summary
This summary is machine-generated.

Visceral endoderm, initially thought to form only extraembryonic structures, surprisingly contributes to the embryo proper in early mouse development. This finding challenges previous understandings of early embryonic cell fate determination.

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Related Experiment Videos

Last Updated: Jun 29, 2026

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11:53

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Isolation of Embryonic Tissues and Formation of Quail-Chicken Chimeric Organs Using The Thymus Example
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Area of Science:

  • Developmental biology
  • Cell biology
  • Genetics

Background:

  • The early mouse embryo is covered by visceral endoderm, a cell layer traditionally believed to only form extraembryonic structures.
  • The precise contribution of visceral endoderm to the developing embryo proper has been a long-standing question in developmental biology.

Discussion:

  • Kwon et al. (2008) challenge the established view by demonstrating a significant contribution of visceral endoderm cells to the embryo proper.
  • This unexpected finding suggests a more complex role for visceral endoderm in early embryonic patterning and organogenesis.

Key Insights:

  • A notable population of visceral endoderm cells actively participates in forming the embryo proper.
  • This contribution occurs alongside the endoderm derived from the epiblast, indicating a dual origin for embryonic endoderm.

Outlook:

  • Further research is needed to elucidate the molecular mechanisms regulating this visceral endoderm contribution.
  • Understanding this pathway could offer new insights into developmental disorders and regenerative medicine strategies.