notochordal plate


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notochordal plate

[¦nōd·ə¦kord·əl ′plāt]
(embryology)
A plate of cells representing the root of the head process of the embryo after the embryo becomes vesiculated.
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The notochordal plate is interposed between the foregut and the neuroectoderm during the 3rd week of embryonic life.
These pre-notochordal cells intercalate with underlying hypoblast so that, for a short time a double layered plate called notochordal plate is found in the midline of the embryo.