Search Ontology:
Cell Ontology

bilaminar disc

Term ID
UBERON:0000091
Synonyms
  • bilaminar disk
  • bilaminary embryonic disc
  • bilaminary germ disc
  • embryonic disc
  • embryonic shield
  • germinal disc
  • germinal disk
Definition
A flattened, almost circular bilaminar plate of cells formed when the inner cell mass (aka embryoblast) forms two epithelial layers, each of a distinct lineage, separated by an extracellular basement membrane: the external (dorsal) layer is called the epiblast and the internal (ventral) layer is called the hypoblast (aka primitive endoderm); together, they compose the bilaminar embryonic disc.
References
Ontology
Cell Ontology
Relationships
develops from
has parts
is a type of
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