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  • neuroectoderm
  • The neuroectoderm (neural ectoderm) will form the retina, retinal pigment epithelium, the pigmented and non-pigmented layers of the ciliary and iris epithelium, the dilator and sphincter muscles of the iris and the optic nerve fibres. (thefreedictionary.com)
  • Inhibition of BMPs allows neuroectoderm to arise from ectoderm, a process which eventually forms the neural plate. (wikipedia.org)
  • primitive
  • The presence of an inhibitor-resistant c-Src mutant, but not analogous mutants of Hck, Lck, c-Yes, or Fyn, reversed the differentiation block associated with inhibitor treatment, resulting in the formation of cells with properties of primitive ectoderm. (sciencemag.org)
  • These results show that distinct SFK signaling pathways regulate mES cell fate and demonstrate that the formation of primitive ectoderm is regulated by the activity of c-Src. (sciencemag.org)
  • induce
  • We have used markers of pre-placodal ectoderm (PPE) ( six1, eya1 ) to determine that gradients of both neural inducers and anteroposterior signals are necessary to induce and appropriately position the PPE. (biologists.org)
  • This began when boiled ectoderm was found to still be able induce by Johannes Holtfreter. (wikipedia.org)
  • convergent extension
  • Once convergent extension and radial intercalation are underway, the rest of the vegetal pole, which will become endoderm cells, is completely engulfed by the prospective ectoderm, as these top cells undergo epiboly, where the ectoderm cells divide in a way to form one layer. (wikipedia.org)
  • neurons
  • However, unlike another previously identified proneural gene (XASH-3), neuroD seems competent to bypass the normal inhibitory influences that usually prevent neurogenesis in ventral and lateral ectoderm and is capable of converting most of the embryonic ectoderm into neurons. (sciencemag.org)
  • For instance, while ciliated sensory neurons arise from preplacodal ectoderm (PPE), previous lineage tracing studies suggest that both Gonadotropin releasing hormone 3 (Gnrh3) and microvillous sensory neurons derive from cranial neural crest (CNC). (elifesciences.org)
  • cells
  • These two processes allow for the prospective mesoderm cells to be placed between the ectoderm and the endoderm. (wikipedia.org)
  • It is these three components of the ectoderm that will each give rise to a particular set of cells. (wikipedia.org)
  • To challenge the normal tissue interactions leading to placode formation, we ablated the cranial neural crest cells or implanted barriers between the neural tube and the ectoderm. (biologists.org)
  • A new factor specific for the ectoderm, XFDL156, has shown to be essential for suppression of mesoderm differentiation from pluripotent cells. (wikipedia.org)
  • The segmented ectoderm and mesoderm of the leech arise via a stereotyped cell lineage from embryonic stem cells called teloblasts. (biologists.org)
  • Furthermore, the frequency of cells with trophoblast stem cell potential increased steadily in extra-embryonic/chorionic ectoderm until the first somite pairs formed, decreasing thereafter in a manner independent of proximity to the allantois. (biologists.org)
  • Coincident with occlusion of the ectoplacental cavity via union between chorionic ectoderm and the ectoplacental cone, a decline in the frequency of mitotic chorionic ectoderm cells in vivo, and of trophoblast stem cell potential in vitro, was observed. (biologists.org)
  • The remaining cells form the ectoderm. (wikipedia.org)
  • In the head: Neural crest cells migrate Neural tube closes Overlying ectoderm closes In the trunk: Overlying ectoderm closes Neural tube closes Neural crest cells migrate Four neural tube subdivisions each eventually develop into distinct regions of the central nervous system by the division of neuroepithelial cells: the forebrain (prosencephalon), the midbrain (mesencephalon), the hindbrain (rhombencephalon) and the spinal cord. (wikipedia.org)
  • precursor
  • Research has also shown that Rho GTPase dependent filopodia from the precursor lens ectoderm play an important role in the formation of the lens pit. (wikipedia.org)
  • organs
  • The ectoderm develops into the skin, the nervous system, and the sense organs. (thefreedictionary.com)
  • The ectoderm forms many of the sensory organs (eye, ear, nose), and is also the source of Rathke's pouch , an invaginating diverticulum of the stomodeal roof which ultimately detaches from the stomodeum and becomes the adenohypophysis of the pituitary gland. (lifemapsc.com)
  • tissue
  • The intrinsic forces include cell-shape changes, cell rearrangement, and cell division within the neural ectoderm, and they are responsible for remodeling, furrowing and rostrocaudal elongation of this tissue. (biologists.org)