See Also: primitive knot(medicine)
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primitive(dictionary)
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knot(encyclopedia)
net knot(medicine)

primitive knot (medicine)


primitive knot -->
primitive node


A local thickening of the blastoderm at the cephalic end of the primitive streak of the embryo.

Synonym: Hensen's knot, Hensen's node, Hubrecht's protochordal knot, primitive knot, protochordal knot.