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Descriptor English: Cleavage Stage, Ovum
Descriptor Spanish: Fase de Segmentación del Huevo
Descriptor Portuguese: Fase de Clivagem do Zigoto
Descriptor French: Stade de la segmentation de l'oeuf
Entry term(s): Cleavage Stages, Ovum
Ovum Cleavage Stage
Ovum Cleavage Stages
Ovum Segmentation Stage
Ovum Segmentation Stages
Segmentation Stage, Ovum
Segmentation Stages, Ovum
Tree number(s): A16.166
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D002970
Scope note: 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.
Allowable Qualifiers: CH chemistry
CL classification
CY cytology
DE drug effects
EN enzymology
IM immunology
ME metabolism
MI microbiology
PA pathology
PH physiology
PS parasitology
RE radiation effects
TR transplantation
UL ultrastructure
VI virology
Previous Indexing: Cell Division (1966-1979)
Mitosis (1968-1979)
Ovum (1966-1979)
Zygote (1975-1979)
Public MeSH Note: 80
History Note: 80
Related: Cell Division MeSH
DeCS ID: 2995
Unique ID: D002970
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 1980/01/01
Date of Entry: 1979/04/17
Revision Date: 2007/07/09
Cleavage Stage, Ovum - Preferred
Concept UI M0004547
Scope note 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.
Preferred term Cleavage Stage, Ovum
Entry term(s) Cleavage Stages, Ovum
Ovum Cleavage Stage
Ovum Cleavage Stages
Ovum Segmentation Stage
Ovum Segmentation Stages
Segmentation Stage, Ovum
Segmentation Stages, Ovum



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