... "gastrula" and "gastrulation" were coined by Ernst Haeckel, in his 1872 work "Biology of Calcareous Sponges". Gastrula ( ... Sponges do not go through the gastrula stage. Gastrulation takes place after cleavage and the formation of the blastula, or ... In triploblastic organisms, the gastrula is trilaminar (three-layered). These three germ layers are the ectoderm (outer layer ... ISBN 978-0-87893-558-1. Hall, Brian Keith (1998). "8.3.3 The gastrula and gastrulation". Evolutionary developmental biology ( ...
It is the first cell cavity formed as the embryo enlarges, and is the essential precursor for the differentiated gastrula.[page ... from hatched blastula to late gastrula". Journal of Morphology. 185 (3): 387-402. doi:10.1002/jmor.1051850310. PMID 29991195. ...
Clonal analyses of the blastula and gastrula stages". Developmental Biology. 108 (1): 94-101. doi:10.1016/0012-1606(85)90012-0 ...
The blastula develops into a structure called a gastrula through a process called gastrulation. The gastrula then undergoes ... The embryo during this process is called a gastrula. The germ layers are referred to as the ectoderm, mesoderm and endoderm. In ... Cells at the polar ends of the blastula/gastrula proliferate, mostly at the animal pole. Other major changes during ...
... of the gastrula. Following involution at the mid-gastrula stage, the IMZ undergoes convergent extension, in which the lateral ... In Xenopus laevis, the transition from the gastrula to the neurula involves morphological changes in two regions surrounding ... The neurula stage is preceded by the gastrula stage; consequentially, neurulation is preceded by gastrulation. Neurulation ...
Growth and accretion are started with blastula and gastrula. Aristotle's On the Heavens founded cosmology. Earth's ...
The stage of coelom formation starts with the gastrula; as the archenteron forms, pockets of migrating cells also form, ... Enterocoelous development begins once the embryo reaches the gastrula phase of development. At this point, there are two layers ...
It is specifically expressed during late blastula and gastrula stages. During gastrulation, it is critical in promoting the ...
Rodríguez-Martínez M, Pinzón N, Ghommidh C, Beyne E, Seitz H, Cayrou C, Méchali M (March 2017). "The gastrula transition ...
Cnidaria begin to differentiate their nervous systems in the late gastrula. In Hydrozoa and Anthozoa, interstitial stem cells ...
... consumption begins at the gastrula stage and continues throughout development. Up to 46-78 % of egg galactogen ...
The neural plate specifies somite size in the Xenopus laevis gastrula. Mariani, F.V., Choi, G.B., and Harland, R.M. Dev Cell. ... "The neural plate specifies somite size in the Xenopus laevis gastrula". Developmental Cell. 1 (1): 115-126. doi:10.1016/s1534- ...
"Guidance of mesoderm cell migration in the Xenopus gastrula requires PDGF signaling". Development. 131 (11): 2727-36. doi: ...
"A common progenitor for haematopoietic and endothelial lineages in the zebrafish gastrula". Nature. 443 (7109): 337-9. Bibcode: ...
"A common progenitor for haematopoietic and endothelial lineages in the zebrafish gastrula". Nature. 443 (7109): 337-339. ...
"A common progenitor for haematopoietic and endothelial lineages in the zebrafish gastrula". Nature. 443 (7109): 337-9. Bibcode: ...
New hyalin is not expressed until after the gastrula has been formed. This is shown by the accumulation of hyalin mRNA. This ... This leads to the keystone shape of the gastrula, with the different layers forming into separate biological systems. Hyalin ... Maternal hyalin persists throughout development and appears in the archenteron of the gastrula. Since the same genomic DNA gene ...
Mechanisms of Mesendoderm Internalization in the Xenopus Gastrula: Lessons from the Ventral Side. Developmental Biology. 240, ...
Trinkaus, J.P. (1973). "Surface activity and locomotion of Fundulus deep cells during blastula and gastrula stages". ...
This suggests that the gastrulation and the gastrula stage are universal for eumetazoans. It has been perceived as problematic ... The invagination of the original gastrula stage he saw as bilaterally symmetric rather than radially symmetric. The ...
From gastrula to pluteus stages the skeleton grows in both size and complexity. Once the organism undergoes metamorphosis to ... During the gastrula stage, once the blastopore has formed, the PMCs are localized within the prospective ventrolateral (from ...
In due course, the blastula changes into a more differentiated structure called the gastrula. Soon after the gastrula is formed ...
Named by William Ballard, the pharyngula stage follows the blastula, gastrula and neurula stages. At the pharyngula stage, all ...
"Xbra functions as a switch between cell migration and convergent extension in Xenopus gastrula". Development. 130 (9): 1961- ...
During fetal development, neural matter originates in the outer, ectodermic layer of the gastrula; thus, it originates from the ...
In the early gastrula, most of the tissue in the embryo is not determined. The one exception is the anterior portion of the ...
After blastulation, the single-layered blastula expands and reorganizes into multiple layers, a gastrula (seen in the figure to ... the right). Reptiles, birds and mammals are triploblastic organisms, meaning the gastrula comprises three germ layers; the ...
The gastrulae have an epidermal layer that is entirely ciliated and supports their movement. After approximately 24 hours, the ... gastrulae transform into an auricularia larvae. Feeding begins upon the transition to this stage. After 19-24 days, the ...
They become expressed in the anterior region of the dorsal ectoderm in late gastrula embryos. XAG-2 expression gathers at the ...
Koch E, Winik BC, Castro-Vazquez A (April 2009). "Development beyond the gastrula stage and digestive organogenesis in the ...