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  2. Embryonic stem cell - Wikipedia

    en.wikipedia.org/wiki/Embryonic_stem_cell

    Only embryonic stem cells of the morula are totipotent: able to develop into any type of cell, including those of the placenta. Embryonic stem cells (ESCs) are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage pre-implantation embryo.

  3. Blastulation - Wikipedia

    en.wikipedia.org/wiki/Blastulation

    A. Morula and B. cross section of a blastula displaying the blastocoel and blastoderm of early animal embryonic development. Blastulation is the stage in early animal embryonic development that produces the blastula. In mammalian development, the blastula develops into the blastocyst with a differentiated inner cell mass and an outer trophectoderm.

  4. Cleavage (embryo) - Wikipedia

    en.wikipedia.org/wiki/Cleavage_(embryo)

    The morula is now watertight, to contain the fluid that the cells will later pump into the embryo to transform it into the blastocyst. In humans, the morula enters the uterus after three or four days, and begins to take in fluid, as sodium-potassium pumps on the trophoblasts pump sodium into the morula, drawing in water by osmosis from the ...

  5. Blastocyst - Wikipedia

    en.wikipedia.org/wiki/Blastocyst

    The morula then develops by cavitation to become the blastocyst, or in many other animals the blastula. Cell differentiation then further commits the morula's cells into two types: trophectoderm cells that surround the lumen and the inner mass of cells (the embryoblast). The inner cell mass is at the origin of embryonic stem cells. [15]

  6. Stem cell - Wikipedia

    en.wikipedia.org/wiki/Stem_cell

    Ethical concerns are also raised about the practice of using or researching embryonic stem cells. Harvesting cells from the blastocyst results in the death of the blastocyst. The concern is whether or not the blastocyst should be considered as a human life. [108] The debate on this issue is mainly a philosophical one, not a scientific one.

  7. Cell potency - Wikipedia

    en.wikipedia.org/wiki/Cell_potency

    Cell potency is a cell's ability to differentiate into other cell types. [1] [2] The more cell types a cell can differentiate into, the greater its potency.Potency is also described as the gene activation potential within a cell, which like a continuum, begins with totipotency to designate a cell with the most differentiation potential, pluripotency, multipotency, oligopotency, and finally ...

  8. Blastocoel - Wikipedia

    en.wikipedia.org/wiki/Blastocoel

    The blastocoel further expands and the inner cell mass becomes positioned on one side of the trophoblast cells forming a mammalian blastula, called a blastocyst. The axis formed by the inner cell mass and the blastocoel is the first axis of symmetry of mammalian embryo and determines its attachment point to the uterus.

  9. Somatic cell nuclear transfer - Wikipedia

    en.wikipedia.org/wiki/Somatic_cell_nuclear_transfer

    After the somatic cell transfers, the cytoplasmic factors affect the nucleus to become a zygote. The blastocyst stage is developed by the egg to help create embryonic stem cells from the inner cell mass of the blastocyst. [3] The first mammal to be developed by this technique was Dolly the sheep, in 1996. [4]