Term: margin hypoblast
Name: margin
Synonyms:
Definition: Embryonic structure, the edge of the blastoderm.
Ontology: Anatomy Ontology [ZFA:0000038]

Name: hypoblast
Synonyms: mesendoderm
Definition: The inner of the two layers of the blastoderm that forms during gastrulation and give rise to the definitive mesoderm and endoderm.
Ontology: Anatomy Ontology [ZFA:0000117]