Primitive Streak

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Primitive Node

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Primitive Node Cells

Embryonic Index: PrS.PrN.PrmNCs

Primitive node cells are a group of specialized cells that migrate through the primitive node, which is located at the cranial end of the primitive streak and give rise to the prechordal plate and notochordal process. The cells migrating most anteriorly form the prechordal plate, whereas the ones migrating most posteriorly form the notochordal process.