Term Name: yolk syncytial layer
Synonyms: periblast, yolk sac, YSL
Definition: Peripheral layer of the yolk cell including nuclei and non-yolky cytoplasm.
Appears at: Blastula:1k-cell (3.0h-3.33h)
Evident until: Larval:Day 5 (120.0h-144.0h, 3.9mm, 6 teeth)
Ontology: Anatomy Ontology [ZFA:0000088]

Relationships
develops from: marginal blastomere yolk
has parts: external yolk syncytial layer internal yolk syncytial layer organizer inducing center
is a type of: embryonic structure

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