blastomere

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Words related to blastomere

any cell resulting from cleavage of a fertilized egg

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References in periodicals archive ?
For all species of cidaroids in which early development has been described, the blastomeres are widely spaced.
reported that the rate of survival tends to increase with the increasing number of blastomeres and cell stage cleavage embryos (57, 58).
Sexing of preimplantation mouse embryos by measurement of X-linked gene dosage in a single blastomere.
The separated blastomeres were coated with an artificial zona pellucida and placed in the culture medium used for in vitro fertilization (IVF).
Likewise, if these factors are distributed to both blastomeres during first cleavage by equalizing this division, twinning occurs via the production of two D quadrants (Tyler, 1930; Henry and Martindale, 1987; Dorresteijn et at, 1987; Render, 1989).
As the mitotic apparatus of the large blastomere became organized with chromosomes at the metaphase plate, the chromosomes of the three small blastomeres were less condensed and the aster not completely segregated.
The increase of cell segmentation enhances the degree of compaction between blastomeres and marks the end of the ball stage (Wolpert et al.
Vacquier and Mazia (1968a, b) hypothesized that the hyaline layer plays a greater role in holding blastomeres together in regular sea urchins than in sand dollars.
Spindle [5] and ooplasmic transfer [6,7] pre-fertilisation, and pronuclear [8] and blastomere nucleus transfer [9] post-fertilisation, have been explored to achieve this.
Aneuploidies of the blastomeres were analyzed according to the depth of the heterozygous SNP alleles.
a (formerly called FoxA-a) is expressed in the animal-anterior, vegetal-anterior and vegetal-posterior blastomeres.
It reviews current methods and experiences, then provides an atlas of normal and abnormal human preimplantation development; micromanipulation and biopsy of polar bodies, blastomeres, and blastocytes; nuclear transfer techniques and the prospect for artificial gamete formation; and preimplantation diagnosis for aneuploidies, translocations, and single-gene disorders.
Specific topics include germ-cell differentiation from pluripotent cells, adult stem-cell population in the human testis, embryonic stem cells from blastomeres maintaining embryo viability, in utero hematopoietic cell transplantation, and the metabolic framework of pluripotent stem cells and potential mechanisms of regulation.
Embryos were scored according to the number, size of the blastomeres and the amount of anucleate fragmentation: type 1, embryos had equal-sized blastomeres and anucleate fragmentation; type 2, embryos had blastomeres unequal in size and less than 20% fragmentation; type 3, embryos had 20%-50% fragmentation; and type 4, embryos had greater than 50% fragmentation.
Preclinical validation of a microarray method for full molecular karyotyping of blastomeres in a 24-h protocol.