| Term Name: | external yolk syncytial layer |
|---|---|
| Synonyms: | E-YSL |
| Definition: | The portion of the YSL that is outside of the blastoderm margin during epiboly. |
| Appears at: | Blastula:Oblong (3.66h-4.0h) |
| Evident until: | Pharyngula:Prim-15 (30.0h-36.0h) |
| Ontology: | Anatomy Ontology [ZFA:0000309] |
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