EMBRYONIC DEVELOPMENT & STEM CELL COMPENDIUM
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Hypoblast
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Parietal Endoderm Cells (Hpb)


Hpb.Hpb.PrtlECs
Parietal endoderm cells line the mouse parietal yolk sac interior. 

The parietal yolk sac does not exist in human development. PTHrP, RA and dibutryl cAMP induce parietal endoderm differentiation.
E5 - E5.5
Yolk Sac Endoderm
Parietal Endoderm Cells
Multiple Ancestors Single Ancestor No Descendants Develops from Part of Parent