(Phys.org) —A fundamental question in the evolution of animal body plans, is where did the head come from? In animals with a clear axis of right-left symmetry, the bilaterians, the head is where the brain is, at the anterior ...
(Phys.org) —Early embryonic development is a marvel of mechanics. Its signature step is the production of three tissue layers—mesoderm, ectoderm, and endoderm—through a topological maneuver known as gastrulation. While ...
Materials scientists at UNSW Sydney have shown that human pluripotent stem cells in a lab can initiate a process resembling the gastrulation phase—where cells begin differentiating into new cell types—much earlier than ...
Cell & Microbiology
Dec 15, 2022
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160
Researchers at the University of Cambridge have managed to reconstruct the early stage of mammalian development using embryonic stem cells, showing that a critical mass of cells – not too few, but not too many – is needed ...
Cell & Microbiology
Nov 4, 2014
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Classical X-ray radiographs provide information about internal, absorptive structures of organisms such as bones. Alternatively, X-rays can also image soft tissues throughout early embryonic development of vertebrates. Related ...
Cell & Microbiology
May 16, 2013
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An international team of scientists using a new X-ray method recorded the internal structure and cell movement inside a living frog embryo in greater detail than ever before.
General Physics
May 17, 2013
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A collaboration of researchers from Japan, Spain and the U.S. offers a phylogenetic and ontogenetic overview of the primitive streak and its role in mediating amniote (vertebrate animals that develop on land) gastrulation, ...
Evolution
Dec 2, 2021
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Scientists from Helmholtz Zentrum München are revising the current textbook knowledge about gastrulation, the formation of the basic body plan, during embryonic development. Their study in mice has implications for cell ...
Cell & Microbiology
Jun 24, 2021
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Gastrulation, the process where an embryo reorganizes itself from a hollow sphere into a multilayered structure, is considered a "black box" of human development. This is because human embryos are typically not cultured for ...
Cell & Microbiology
Jul 20, 2023
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45
A new discovery by researchers challenges our current understanding of gastrulation, the most important stage of early embryonic development.
Cell & Microbiology
Sep 27, 2023
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