Cleavage Stage, Ovum
MESHD002970
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.
Synonyms
- Cleavage Stages, Ovum
- Ovum Cleavage Stage
- Ovum Cleavage Stages
- Segmentation Stage, Ovum
- Ovum Segmentation Stage
- Ovum Segmentation Stages
- Segmentation Stages, Ovum
Source last updated 2026-05-24T15:27:57.172Z