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Welcome to
LifeMap Discovery

Watch the introductory video to learn more about our database of embryonic development for stem cell research and regenerative medicine

All Anatomical Compartments > Compartment Card
Primitive Streak >

Posterior Primitive Streak

The posterior primitive streak gives rise to the extraembryonic mesoderm, which migrates through the posterior region of the primitive streak.

The lateral plate mesoderm ingresses through the middle region of the primitive streak. The formation of middle-primitive-streak derivatives is subject to the combined action of TGFB, FGF and WNT signalling, whereas that of the posterior primitive streak depends on BMP activity.
Primitive Streak
Posterior Primitive Streak
Multiple Ancestors Single Ancestor No Descendants Develops from Part of Parent