نتایج جستجو برای: convergent wall

تعداد نتایج: 191885  

Journal: :Current Biology 2009
Patrick T. Martone José M. Estevez Fachuang Lu Katia Ruel Mark W. Denny Chris Somerville John Ralph

Lignified cell walls are widely considered to be key innovations in the evolution of terrestrial plants from aquatic ancestors some 475 million years ago. Lignins, complex aromatic heteropolymers, stiffen and fortify secondary cell walls within xylem tissues, creating a dense matrix that binds cellulose microfibrils and crosslinks other wall components, thereby preventing the collapse of conduc...

Journal: :VIEW Journal of European Television History and Culture 2014

2004
Jennifer A Zallen Richard Zallen R Zallen

Convergent extension is the cell-rearrangement process by which a developing embryo elongates to establish the head-to-tail body axis. In the early Drosophila embryo, this process occurs within a one-cell-thick epithelial layer. Using confocal microscopy, images were collected of the two-dimensional cell pattern at four stages during convergent extension in wild-type embryos and at one stage in...

Journal: :Molecules 2015
Gemma Aragay Daniel Hernández Begoña Verdejo Eduardo C Escudero-Adán Marta Martínez Pablo Ballester

We describe the use of two series of aryl-extended calix[4]pyrrole receptors bearing two and four electronically tunable phenyl groups, respectively, in their meso-positions as model systems for the quantification of CH-π interactions in solution. The "four-wall" and the "two-wall" receptors formed thermodynamically stable 1:1 complexes in acetonitrile solution with both trimethylamine N-oxide ...

2015
Debashis Dhara Anup Kumar Misra

Conventional glycoconjugate vaccines are prepared with polysaccharides isolated from bacterial fermentation, an approach with some significant drawbacks such as handling of live bacterial strains, the presence of biological impurities, and inter-batch variations in oligosaccharide epitope structure. However, it has been shown in many cases that a synthetic fragment of appropriate structure conj...

Journal: :iranian journal of science and technology (sciences) 2007
r. f. patterson

in this paper we introduce some new double sequence spaces using the orlicz function andexamine some properties of the resulting sequence spaces.

Journal: :Developmental Cell 2002

Journal: :Developmental biology 2002
David N Keys Michael Levine Richard M Harland John B Wallingford

Dishevelled signaling plays a critical role in the control of cell intercalation during convergent extension in vertebrates. This study presents evidence that Dishevelled serves a similar function in the Ciona notochord. Embryos transgenic for mutant Dishevelled fail to elongate their tails, and notochord cells fail to intercalate, though notochord cell fates are unaffected. Analysis of mosaic ...

Journal: :Journal of Physics A: Mathematical and Theoretical 2017

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