gastrulation


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Related to gastrulation: organogenesis

gastrulation

 [gas″troo-la´shun]
the process by which a blastula becomes a gastrula or, in forms without a true blastula, the process by which three germ cell layers are acquired.

gas·tru·la·tion

(gas'trū-lā'shŭn),
Transformation of the blastula or blastocyst into the gastrula; the development and invagination of the embryonic germ layers. In human embryos, gastrulation is the process by which the bilaminar embryonic disk is converted into a trilaminar embryonic disk.

gas·tru·la·tion

(gas'trū-lā'shŭn)
Transformation of the blastula or blastocyst into the gastrula; the development and invagination of the embryonic germ layers.

gastrulation

the process by which the BLASTULA forms the GASTRULA.
References in periodicals archive ?
The new technique can also help scientists study processes related to developmental biology - like gastrulation - and could provide alternatives to animal experimentation in some areas of research.
De Robertis, "The evolutionarily conserved BMP-binding protein Twisted gastrulation promotes BMP signalling," Nature, vol.
Skin development, body hair orientation, polarization of the sensory epithelium in the inner ear, and the directed movement of mesenchymal cell populations during gastrulation are among the processes requiring proper PCP signaling in vertebrates [227, 254-256].
The human embryo, in the gastrulation stage, has the shape of a flat disc with two layers of cells (bilaminar disk) known as epiblast and hypoblast (Figure 1) [40].
In this work, the temperature most likely influenced gastrulation, observed earlier (5 h 10 min AF, 29.9 [+ or -] 0.18[degrees]C) than what was recorded by Neumann (2008) (6 h AF, 27[degrees]C) and Clavijo-Ayala and Arias Castellanos (2004) (6.5 h AF, 27.5[degrees]C) for B.
The protein on the other part is characterized by a carboxy-terminal cysteine-rich, which is used to classify antagonists of BMPs in the different subfamilies: chordin and noggin, DAN and twisted gastrulation (7).
Gastrulation in animals results from a complex interplay of cell shape changes, cell division, and migration, making it difficult to develop a quantitative understanding of the process.
Completion of implantation, gastrulation, and neurulation are discussed before an interlude on, first, the mechanisms of normal and misdirected morphogenesis, and second, a general overview of fetal development and fetal healthcare needs.
As [beta]4GalT2 has been shown to be involved in mouse neuronal development (22) and medaka (Oryzias latipes) gastrulation, (60) the [beta]4-galactosylation of N-glycans by [beta]4GalT2 must be important for animal embryonic development and growth.
miR-124a is important for migratory cell fate transition during gastrulation of human embryonic stem cells.
This birth defect occurs during 3rd week of gastrulation due to malformations in the intermediate mesoderm.
Fgfr1 null mutant embryos die during gastrulation and segmentation, while homozygous embryos of Fgfr2 knockout die before gonad formation (18, 19).