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Descriptor English: Blastomeres
Descriptor Spanish: Blastómeros
Descriptor blastómeros
Entry term(s) blastocitos
Scope note: Células indiferenciadas producidas tras las primeras divisiones del huevo fecundado (CIGOTO). Dentro de la ZONA PELÚCIDA intacta cada división produce dos blastómeros cuyo tamaño es la mitad del de la célula progenitora. Los blastómeros son totipotentes hasta el estadio de 8 células. La MÓRULA de 16 células contiene células externas y células internas.
Descriptor Portuguese: Blastômeros
Descriptor French: Blastomères
Entry term(s): Blastocyte
Blastocytes
Blastomere
Tree number(s): A11.872.700.250.130
A16.094
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D001757
Scope note: Undifferentiated cells resulting from cleavage of a fertilized egg (ZYGOTE). Inside the intact ZONA PELLUCIDA, each cleavage yields two blastomeres of about half size of the parent cell. Up to the 8-cell stage, all of the blastomeres are totipotent. The 16-cell MORULA contains outer cells and inner cells.
Annotation: do not confuse entry term BLASTOCYTES with BLASTOCYST
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: Blastocyst (1974-1979)
Cell Division (1966-1979)
Zygote (1975-1979)
Public MeSH Note: 80
History Note: 80
DeCS ID: 1781
Unique ID: D001757
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: 2015/07/07
Blastomeres - Preferred
Concept UI M0002644
Scope note Undifferentiated cells resulting from cleavage of a fertilized egg (ZYGOTE). Inside the intact ZONA PELLUCIDA, each cleavage yields two blastomeres of about half size of the parent cell. Up to the 8-cell stage, all of the blastomeres are totipotent. The 16-cell MORULA contains outer cells and inner cells.
Preferred term Blastomeres
Entry term(s) Blastomere
Blastocytes - Broader
Concept UI M0498356
Scope note Undifferentiated embryonic cells, a term mostly used in foreign literature.
Preferred term Blastocytes
Entry term(s) Blastocyte



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