Mesodermal expression of Tbx1 is necessary and sufficient for pharyngeal arch and cardiac outflow tract development.

Abstract excerpt

The development of the segmented pharyngeal apparatus involves complex interaction of tissues derived from all three germ layers. The role of mesoderm is the least studied, perhaps because of its apparent lack of anatomical boundaries and positionally restricted gene expression. Here, we report that the mesoderm-specific deletion of Tbx1, a T-box transcription factor, caused severe pharyngeal patterning and...

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