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Gastrulation

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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Updated: May 28, 2026

Tracking Morphogenetic Tissue Deformations in the Early Chick Embryo

Tracking Morphogenetic Tissue Deformations in the Early Chick Embryo

Published on: October 17, 2011

Tracking morphogenetic tissue deformations in the early chick embryo.

Benjamen A Filas¹, Victor D Varner, Dmitry A Voronov

¹Department of Biomedical Engineering, Washington University.

Journal of Visualized Experiments : Jove

|October 26, 2011

Summary

Two novel methods track embryonic tissue deformation using fluorescent magnetic particles for 2-D analysis and microspheres with optical coherence tomography for 3-D analysis, aiding developmental biology research.

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Last Updated: May 28, 2026

Tracking Morphogenetic Tissue Deformations in the Early Chick Embryo

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Area of Science:

Developmental Biology
Biophysics
Cell Biology

Background:

Embryonic epithelia undergo complex deformations during organogenesis.
Tracking surface markers quantifies tissue growth, contraction, and shear.
Existing labeling techniques have limitations in adaptability and imaging compatibility.

Purpose of the Study:

To present two distinct fiducial marker techniques for quantifying embryonic tissue deformations.
To demonstrate the utility of these methods in studying early embryonic development.

Main Methods:

Simultaneous application of hundreds of fluorescent magnetic iron particles for 2-D deformation tracking.
Utilizing polystyrene microspheres as contrast agents for 3-D deformation tracking via non-invasive optical coherence tomography (OCT).

Main Results:

Successfully quantified 2-D tissue deformations using magnetic iron particle labels.
Successfully tracked 3-D tissue deformations using microspheres and OCT imaging.
Demonstrated the application of these techniques in studying early head fold, heart, and brain development.

Conclusions:

The described labeling methods provide versatile tools for analyzing embryonic morphogenesis.
These techniques are adaptable to various morphogenetic processes and imaging modalities.
Facilitates the study of physical mechanisms underlying embryonic development.