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ectoderm
ectoderm
The Oxford Pocket Dictionary of Current English
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2009
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© The Oxford Pocket Dictionary of Current English 2009, originally published by Oxford University Press 2009. (Hide copyright information)
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ec·to·derm
/ ˈektəˌdərm/
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n. Zool. & Embryology
the outermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the epidermis, nerve tissue, and nephridia. Compare with endoderm and mesoderm.
DERIVATIVES:
ec·to·der·mal
/ ˌektōˈdərməl/ adj.
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Proximal visceral endoderm and extraembryonic ectoderm regulate the formation of primordial germ cell precursors.(Research article)
Magazine article from: BMC Developmental Biology; 12/20/2007; ; 700+ words
; ...cells adjacent to the extraembryonic ectoderm. The population of PGC precursors increases...endoderm (VE) and the extraembryonic ectoderm (ExE) play an important role in the...from epiblast; ExE, extraembryonic ectoderm; thick black line, endoderm. (I...
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Embryonic stem cells develop into ectoderm cells in damaged inner ear.
Newspaper article from: Immunotherapy Weekly; 6/2/2004; 700+ words
; ...amp; NewsRx.net) -- Embryonic stem cells develop into ectoderm cells in damaged inner ears. "The potential of embryonic...ear may have some activity inducing ES cells to develop into ectoderm cells, but the effect was insufficient to induce inner ear...
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Neural tube derived Wnt signals cooperate with FGF signaling in the formation and differentiation of the trigeminal placodes.(Research article)(fibroblast growth factor)(Report)
Magazine article from: Neural Development; 12/15/2008; ; 700+ words
; ...and focal thickenings of the embryonic ectoderm, the neurogenic placodes [1, 2...cells extend anterior-laterally in the ectoderm and then delaminate into the underlying...follows. At the three somite stage, head ectoderm rostral to the first somite is competent...
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Early Development of Zooxanthella-Containing Eggs of the Corals Pocillopora verrucosa and P. eydouxi with Special Reference to the Distribution of Zooxanthellae.
Magazine article from: The Biological Bulletin; 8/1/2000; ; 700+ words
; ...at least temporarily observed in the ectoderm of planulae of some corals and soft corals...because infection first occurred in the ectoderm cells of embryos or early planulae...daughter cells, including presumptive ectoderm cells (Benayahu, 1997; Benayahu and...
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Function of FGF8 during embryonic development elucidated.
Newspaper article from: Biotech Business Week; 2/9/2004; 700+ words
; ...and to determine whether the pharyngeal ectoderm and endoderm Fgf8 expression domains...gene function in the pharyngeal arch ectoderm and endoderm," the researchers wrote...ablating FGF8 protein in the pharyngeal arch ectoderm causes failure of formation of the fourth...
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ECTODERMAL DYSPLASIAS
Magazine article from: Dental Assistant; 5/1/2004; ; 700+ words
; ...or more derivatives of the embryonic ectoderm. To say that the EDs are inherited means...say that derivatives of the embryonic ectoderm are involved means that the hair, nails...this juncture to illustrate that the ectoderm does not develop in a vacuum. There...
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Ectodermal dysplasias.
Magazine article from: The Dental Assistant; 5/1/2004; ; 700+ words
; ...or more derivatives of the embryonic ectoderm. To say that the EDs are inherited means...say that derivatives of the embryonic ectoderm are involved means that the hair, nails...this juncture to illustrate that the ectoderm does not develop in a vacuum. There...
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Defective Decapentaplegic Signaling Results in Heart Overgrowth and Reduced Cardiac Output in Drosophila
Magazine article from: Genetics; 7/1/2007; ; 700+ words
; ...Decapentaplegic (Dpp) signals from the dorsal ectoderm to maintain Tinman (Tin) expression...that a second Dpp signal from the dorsal ectoderm restricts the number of pericardial cells...Decapentaplegic (Dpp) signals from the dorsal ectoderm to the dorsal mesoderm for a second time...
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 "Genome Biology (Online Edition)")
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A global view of gene expression in lithium and zinc treated sea urchin embryos: new components of gene regulatory networks.(Research)(Clinical report)
Magazine article from: Genome Biology (Online Edition); 5/16/2007; ; 700+ words
; ...but also on genes that are involved in ectoderm differentiation and patterning. We then...territories. During gastrulation the ectoderm is divided into an oral side, which...increase in endoderm at the expense of the ectoderm, but without alterating the mesodermal...
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Churchill regulates cell movement and mesoderm specification by repressing Nodal signaling.(Research article)
Magazine article from: BMC Developmental Biology; 11/2/2007; ; 700+ words
; ...mesoderm comes at the expense of the ectoderm; conversely, repression of mesoderm results in an expansion of the ectoderm [2, 3, 4, 5]. FGF signaling...patterning of the mesoderm and neural ectoderm in mice, frogs, fish and the chick...
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ectoderm
Book article from: The Columbia Encyclopedia, Sixth Edition
ectoderm layer of cells that covers the surface of an animal embryo after the process...Chordata , a third, middle layer, the mesoderm , is formed between the ectoderm and endoderm during gastrulation, and the process is termed triploblastic...
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Hans Spemann
Encyclopedia entry from: Encyclopedia of World Biography
...influence exerted by the cup on the overlying ectoderm. Spemann's Classical Experiments This...the implanted material, so that the ectoderm (upper layer) of the implant formed...embryo was formed by induction from the ectoderm of the host tissue. To decide the point...
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Growth and Differentiation of the Nervous System
Book article from: Animal Sciences
...which also gives rise to the skin. All ectoderm cells have the ability to develop into...releases chemicals onto the overlying ectoderm, causing those cells to differentiate...structure is formed from rapidly dividing ectoderm cells. In the second step, the continued...
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embryo
Book article from: The Columbia Encyclopedia, Sixth Edition
...The outer layer of cells is called the ectoderm , the inner layer the endoderm . Among...however, a later invagination of the ectoderm results in a gut that is open at both...and tissues develop. In general the ectoderm gives rise to the skin, or integument...
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Beneden, Edouard Van
Dictionary entry from: Complete Dictionary of Scientific Biography
...development was presented by Huxley, Lankester, and Haeckel; Van Beneden suggested that ectoderm and endoderm have opposed sexual significance, the ectoderm being the male layer and the endoderm the female layer. He thereafter recognized the hermaphrodite...
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