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Tag Archives: notochord

Controlling development by the numbers

30 Wednesday Oct 2013

Posted by sedeer in Development, Genetics, Vertebrates

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animals, backbone, biology, Developmental biology, Gene, Gene expression, notochord, Popular science, science

An embryo of the sea squirt Ciona. The nuclei of the 40 notochord cells are highlighted in red  and the contours of a few notochord cells are defined by green fluorescent protein. All other visible nuclei are colored in blue. (Image Credit: Janice H. Imai and Anna Di Gregorio)Genes have to be carefully coordinated to switch on at just the right moment in development in order to make a mature, complex embryo out of just a single cell. Scientists working at the Weill Medical College of Cornell University in New York have discovered how this coordination is accomplished. In a paper just published in PLOS Biology, they describe how the gene Brachyury controls the timing of a cascade of genes involved in a crucial process in vertebrate development. Continue reading →

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All text and original images by Sedeer El-Showk. Licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

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