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Notochord

A cartilaginous rod of mesodermal cells at the dorsal midline of all CHORDATE embryos. In lower vertebrates, notochord is the backbone of support. In the higher vertebrates, notochord is a transient structure, and segments of the vertebral column will develop around it. Notochord is also a source of midline signals that pattern surrounding tissues including the NEURAL TUBE development.

Year introduced: 1991(1979)

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Subheadings:

Tree Number(s): A16.660

MeSH Unique ID: D009672

Entry Terms:

  • Notochords
  • Chordamesoderm
  • Chordamesoderms

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