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Gastrula in Biological News

Making a face: A new and earlier marker of neural crest development

... and non-neural cell layers. "We show in this work that neural crest stem cell precursors are designated very early in development -- as early as the gastrula stages -- and in an independent fashion from those other tissues," said Martín García-Castro . The researchers grew grafts of cells from "stage ...
Gastrula in Biological Definition

Gastrula

... The gastrula phase of embryonic development is seen in all animals except the sponges . It follows the blastula phase. The gastrula phase is marked by a dramatic restructuring called gastrulation . After ...

Animal

... into the mouth, and an anus forms separately. In deuterostomes this is reversed. In most protostomes cells simply fill in the interior of the gastrula to form the mesoderm (schizocoelous development), but in deuterostomes it forms through evagination of the endoderm, called enterocoelic pouching. ...

Blastula

... fertilized ovum and consisting of a spherical layer of cells surrounding a fluid-filled cavity. The blastula follows the morula and precedes the gastrula in the development sequence. A blastula has around 128 cells, with a large central cavity called the blastocoel . Also called blastosphere . ...

Developmental biology

... , cleavage , ectoderm , embryo , embryogenesis , embryogeny , embryology , endoderm , extra-embryonic membrane , fetus (or foetus ), gastrula , gastrulation , germ layer , germ plasm , germination , induction , juvenile , larva , maternal effect , mesoderm , metamorphosis , ...

Embryo

... stage of development and up until birth or hatching. In humans, this is from the eighth week of gestation . Stages : morula -> blastula -> gastrula . See also Embryogenesis Embryology In vitro fertilization Plant embryogenesis Embryo space colonization A ...

Animal

... into the mouth, and an anus forms separately. In deuterostomes this is reversed. In most protostomes cells simply fill in the interior of the gastrula to form the mesoderm (schizocoelous development), but in deuterostomes it forms through evagination of the endoderm, called enterocoelic pouching. ...

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Gastrula in Biological Dictionary

Gastrula

... As the gastrula forms, the remnants of the blastocoele to eventually shrink and ... The opening into the gastrula is known as the blastopore. ... early ... from which the various organs later derive. The gastrula develops from the hollow, single-layered ball of ...

Yolk plug

... by epiboly. Frog yolk plug . This embryo is near the end of gastrulation. ... overlying the archenteron roof at the yolk plug gastrula stage ... Continue. Frog Yolk Plug ... yolk plug . Definition from Wiktionary, a free dictionary. Jump to: navigation, search ... The ...

Neurula

... ... or see Neurula on Thesaurus ... A Neurula is an embryo at the early stage of development in which neurulation occurs. ... What is gastrula and neurula stage of a frog ... Britannica online encyclopedia article on neurula (anatomy), ... and the outlines of the somites show ...

Mesoderm

... ... Get information, facts, and pictures about mesoderm at Encyclopedia.com. ... mesoderm in biology, middle layer of tissue formed in the gastrula stage of the ... Online Medical Dictionary and glossary with medical definitions ... Mesoderm : One of the three primary germ cell layers ... ...

Endoderm

... Get information, facts, and pictures about endoderm at Encyclopedia.com. ... endoderm , in biology, inner layer of tissue formed in the gastrula stage of the ... 57. The primary germ layer endoderm is derived from : ... Sonic hedgehog signalling from foregut endoderm patterns the avian ...

Dorsal lip

... Implant in such away that the dorsal lip of the transplant is opposite to that of the host. ... The dorsal lip is transplanted into another gastrula in the ... By transplanting the dorsal blastopore lip onto the ventral side of another host ... This dorsal blastopore lip was ...

Blastomere

... B4 blastomere treatment usually resulted in broods comprised only of ... Although fates both of the early blastomeres and of regions of the gastrula have ... These changes in the blastomere constituents of the animal cap during epiboly ... ...

Archenteron

... stout cylinder called the archenteron . ... Eventually the tip of the archenteron makes contact with the ectoderm near the animal pole. ... gastrula n. , pl. -las or -lae ( ). An embryo at the stage following the blastula, consisting of a ... archenteron . neurula. gastrulate. blastopore ... ...

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