The process is probably regulated by Paraxis (Transcription factor 15) and MESP2. In turn, MESP2 is regulated by Notch signaling. Paraxis is regulated by processes involving the cytoskeleton.

Specification

The Hox genes specify somites as a whole based on their position along the anterior-posterior axis through specifying the pre-somitic mesoderm before somitogenesis occurs. After somites are made, their identity

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