Gastrulation is the stage in the early embryonic development of most animals, during which the blastula (a single-layered hollow sphere of cells), or in...

continue its development through the next stages of gastrulation, neurulation, and organogenesis. Gastrulation is the formation of the three germ layers that...

the three primary germ layers, ectoderm, mesoderm and endoderm, during gastrulation. The amniotic ectoderm and extraembryonic mesoderm also originate from...

internal cavity of the primitive gastrointestinal tract that forms during gastrulation in a developing animal embryo. It develops into the endoderm and mesoderm...

implants in the uterus. Embryogenesis continues with the next stage of gastrulation, when the three germ layers of the embryo form in a process called histogenesis...

hollow ball of cells, a blastula. This early embryonic form undergoes gastrulation, forming a gastrula with either two or three layers (the germ layers)...

primitive streak establishes bilateral symmetry, determines the site of gastrulation, and initiates germ layer formation. To form the primitive streak, mesenchymal...

Meckel's diverticulum. In the third week, gastrulation begins with the formation of the primitive streak. Gastrulation occurs when pluripotent stem cells differentiate...

development of the embryo. Cell movements during amphibian gastrulation In frog embryos, gastrulation initiates at the site identified as the gray crescent...

of an organism happens through fertilization, cleavage, blastulation, gastrulation, organogenesis, and metamorphosis into an adult. Each species of animal...

developmental biology, invagination is a mechanism that takes place during gastrulation. This mechanism or cell movement happens mostly in the vegetal pole....

mesoderm is the middle layer of the three germ layers that develops during gastrulation in the very early development of the embryo of most animals. The outer...

starts at the end of gastrulation and continues until birth. During organogenesis, the three germ layers formed from gastrulation (the ectoderm, endoderm...

Maza, Itay; Novershtern, Noa; Hanna, Jacob H. (1 September 2022). "Post-gastrulation synthetic embryos generated ex utero from mouse naive ESCs". Cell. 185...

sac producing a cellular blastoderm. Like other triploblastic metazoa, gastrulation leads to the formation of three germ layers: the endoderm, mesoderm,...

(middle) and [laevis]x tropicalis cybrid (bottom) embryos cleave and begin gastrulation synchronously, about 50 minutes after diploid laevis x laevis (top) embryos...

meaning a blastula without a clear central cavity. Elysia chlorotica gastrulation is by epiboly: the ectoderm spreads to envelope the mesoderm and endoderm...

first be observed in amphibians and fish during the later stages of gastrulation. At the start of this process, the developing embryo has divided into...

wall where it will undergo further developmental processes, including gastrulation. Embedding of the blastocyst into the endometrium requires that it hatches...

could be a relevant player within germ-layer organization during gastrulation. Gastrulation is a fundamental phase of vertebrate development in which three...

Fetal membranes illustrated at week 3 following gastrulation...

cells divide with spiral cleavage instead of radial cleavage. During gastrulation, the first opening becomes the embryos' mouth while the anus is formed...

blastocoel appears to serve two functions: it permits cell migration during gastrulation, and it prevents cells beneath it from interacting prematurely with cells...

have proposed that personhood begins at such events as fertilization, gastrulation, the acquisition of an EEG pattern, and birth. Other scientists claim...

1976. Snails are protostomes. That means during development, in the gastrulation phase, the blastopore forms the mouth first. Cleavage in snails is spiral...

usually nearing completion by the 4th week of development. Due to abnormal gastrulation, the mesoderm migration is disturbed. This disturbance results in symptoms...

form a hollow sphere (blastula) and then a depression forms at one end (gastrulation) and eventually becomes the digestive cavity. However, in cnidarians...

and ectoderm are germ layers that develop in a process called gastrulation. Gastrulation occurs early in human development. The gastrointestinal tract...

amphibian gastrulation, the blastocoel is displaced by the formation of the archenteron, during mid-gastrulation. At the end of gastrulation, the blastocoel...

single epithelial layer enveloping the blastocoel. The embryo then begins gastrulation, a multipart process which dramatically rearranges its structure by invagination...