MeSH definition : A linear band of rapidly proliferating cells that begins near the posterior end of
an embryo and grows cranially. Primitive streak is formed during GASTRULATION by the
convergent migration of primary ectodermal cells (EPIBLAST). The knot at the tip of
the streak is called HENSEN NODE.;
A linear band of rapidly proliferating cells that begins near the posterior end of
an embryo and grows cranially. Primitive streak is formed during GASTRULATION by the
convergent migration of primary ectodermal cells (EPIBLAST). The knot at the tip of
the streak is called HENSEN NODE.