| 单词 | ectoderm |
| 释义 | ectoderm noun[C] uk/ˈek.tə.dɜːm/us/ˈek.tə.dɝːm/thecellsin theembryoof ahumanoranimalthatdevelopintoskin,hair, and thenervoussystem 外胚层Cells
ectoderm| American Dictionaryectoderm noun[C] us/ˈek·təˌdɜrm/biology thecellsin theembryo(=growingorganismbefore it isborn)of ahumanoranimalthatdevelopintoskin,hair, and thenervoussystem Examplesofectodermectoderm By the 10-somite stage, there is strong staining in the lateralectodermand caudal dorsal neural tube. From theCambridge English Corpus The chicken spalt4 gene (csal4) is expressed in the neural tube, migrating neural crest, branchial arches and, transiently, in the cranialectoderm. From theCambridge English Corpus Players remain pluripotential like stem cells, yet to make their way toward differentiation as infielders (mesoderm), outfielders (ectoderm), or pitchers or catchers (endoderm). From theCambridge English Corpus The neuralectodermthickens to become the neural plate, which invaginates to form the neural tube. From theCambridge English Corpus They are formed by surfaceectodermand pharyngeal endoderm and are populated by paraxial mesoderm and cranial neural crest cells. From theCambridge English Corpus During the next few days the outer surface of the embryo (orectoderm) folds in upon itself to form the neural tube. From theCambridge English Corpus During this complex developmental process, the outer embryonicectodermand its underlying mesoderm give rise to the epidermal and dermal components, which essentially build up the hair follicle unit. From theCambridge English Corpus Presumptive neural crest cells initially lie in the neural folds at the juncture between the neural and non-neuralectodermand then within the dorsal neural tube after its closure. From theCambridge English Corpus At this point, there are two layers of cells - theectoderm(outermost) and the endoderm (innermost) layers. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.It is not a teratoma, however, which is a neoplasm comprising all three germ cell layers (ectoderm, endoderm, mesoderm). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.This leads to the specification of non-neuralectodermand later in the blastula stage to anmioserosa. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Embryos have three layers: endoderm, mesoderm andectoderm. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.Each structure originates form different germinative layers or tissues: theectoderm, endoderm and mesenchyme. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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