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Any of the cells resulting from the cleavage of a fertilized ovum during early embryonic development.

blas′to·mer′ic (-mîr′ĭk, -mĕr′-) adj.


(Physiology) embryol any of the cells formed by cleavage of a fertilized egg
blastomeric adj


(ˈblæs təˌmɪər)

any cell produced during cleavage.
blas`to•mer′ic (-ˈmɛr ɪk, -ˈmɪər-) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.blastomere - any cell resulting from cleavage of a fertilized eggblastomere - any cell resulting from cleavage of a fertilized egg
cell - (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
References in periodicals archive ?
The blastomeres of early embryos were widely spaced (Fig.
If embryos survive the freezethaw process and keep all their blastomeres intact, cryopreservation of embryos would have a comparable pregnancy rate with fresh IVF (49, 50).
Gender determination in single bovine blastomeres by polymerase chain reaction amplification of sex-specific lymorphic fragments in the amelogenin gene.
A second and more limited way to create clones is to split the cells or blastomeres of an early multicelled embryo before the cells have begun to differentiate.
The article describes a method for deriving stem cells from human blastomeres with a single-cell biopsy technique called Preimplantation Genetic Diagnosis (PGD).
First cleavage is essentially equal; however, this cleavage is accompanied by the production of a small polar lobe, which fuses with one of the two resulting blastomeres.
Objective: During the first days of mammalian development, Blastomeres organize themselves into the blastocyst, Which implants the embryo into the maternal uterus.
3C and 4D) and was later absorbed into one of the two cells of the first cleavage to form large and small blastomeres.
The embryos were classified as: grade 1, embryos with even blastomeres and no cytoplasmic fragments; grade 2, embryos with even blastomeres and minor cytoplasmic fragments or blebs; grade 3, embryos with uneven blastomeres and no or few cytoplasmic fragments (11).
The first generation of PGS method was FISH-based screening on blastomeres of cleavage-stage embryos.
Morphological features such as equal or unequal size of blastomeres and the presence or absence of fragmentation of cytoplasm, as well as the dynamics of embryo development, were used as parameters for the evaluation of the embryo quality.