| Name: | shield |
|---|---|
| Synonyms: | dorsal organizer, organizer, Spemann Mangold organizer, Spemann's organizer |
| Definition: | Embryonic structure that is a local accumulation of cells along the germ ring. The shield marks the dorsal side of the embryo. |
| Ontology: | Anatomy Ontology [ZFA:0000071] |
| Name: | epiblast |
|---|---|
| Synonyms: | |
| Definition: | The outer of the two layers of the blastoderm that form during gastrulation, corresponding to primitive ectoderm during gastrulation and to the definitive ectoderm after gastrulation. |
| Ontology: | Anatomy Ontology [ZFA:0000018] |