Vertebrate Segmentation: Snail Counts the Time until Morphogenesis


During segmentation of vertebrate embryos, unsegmented mesenchymal mesoderm is divided into epithelial segments called somites. This process is governed by oscillating gene expression of the somite clock. A recent paper identifies the transcription factor Snail as a link between the somite clock and the control of somite morphogenesis. 
DOI: 10.1016/j.cub.2006.04.007


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