blastomere Any one of the cells formed from the first few cleavages in animal embryology.

For receiving this information we have to make a biopsy of the cell (blastomere).

Such blastomere-like totipotent cells can be differentiated into ectodermal, mesodermal, or endodermal tissues, including placental tissues and germ cells.

The micromanipulation techniques used for blastomere biopsy are safe with little risk to the embryo.

In preferred aspects, the cell is a hepatocyte, optionally infected with HCV, or a blastomere from a single-cell biopsied blastocyst.

The discussion begins with a zygote consisting of a single cell, or blastomere, atop a large ball of yolk.

Cleavage of the blastomere is then shown to produce an embryo containing thousands of cells within a matter of hours.

Transgenic animals can be produced by the selective introduction, for example, by microinjection, of exogenous genetic material into a blastomere of an early embryo in which all cells are totipotent.

The present invention provides a method for pathenogenetic activation by injection and subsequent removal of a sperm into a mammalian cell, for example, an oocyte, an embryo, a blastomere, an inner cell mass cell, or a morulae cell.

It comprised a non-destructive step of micromanipulation of a human embryo to biopsy a single blastomere cell from day 3 cleaving embryos.

The surviving blastomere is provided with conditions conducive to growth and development of an embryo, in appropriate in vitro culture conditions and/or in the reproductive tract of an appropriate female animal.

Here, a single cell, known as a blastomere, was biopsied from an embryo three days after fertilization, then lysed and fixed directly on a microscope slide.

Firstly, a hole is made in the pellucid zone (a.k.a. egg coat) using a laser or using hyaluronidase from the embryo, and then the cell or blastomere is aspirated.

In such cases, the earlier equatorially dividing cell has an approximately equal chance of contributing its progeny to either the embryonic part or the abembryonic part of the blastocyst.

They found in the blastomere samples that there were fewer mitochondria in the samples that had the incorrect number of chromosomes than those with the correct number.