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Embryonic Structures > Cleavage Stage, Ovum

Preferred term

Cleavage Stage, Ovum  

Type

  • mesh:Descriptor

Definition

  • The earliest developmental stage of a fertilized ovum (ZYGOTE) during which there are several mitotic divisions within the ZONA PELLUCIDA. Each cleavage or segmentation yields two BLASTOMERES of about half size of the parent cell. This cleavage stage generally covers the period up to 16-cell MORULA.

Broader concept

Entry terms

  • Segmentation Stage, Ovum

In other languages

URI

http://data.loterre.fr/ark:/67375/JVR-NH1Z2G8P-7

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RDF/XML TURTLE JSON-LD Created 4/17/79, last modified 7/9/07