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Embryo

The developing human organism (a group of cells) that arise from a fertilised egg (after merging of egg and sperm). An embryo does have the potential to become a complete organism. The embryonic stage ends at eight weeks of development.

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Related terms

embryo
Biology; Parasitology

The stage in development following cleavage of the egg up to, but not including, the first larval or first juvenile stage.

embryo
Biology; Neuroscience

The developing organism before birth or hatching.

embryo
Natural environment; Coral reefs

The stage of early growth and differentiation of tissues and the formation of primitive organs and organ systems of a multicellular organism, from fertilization until birth or ...

embryo
Archaeology; Evolution

An early stage of animal development that begins after division of the zygote (the earliest stage, in which joined egg and sperm have not yet divided).

embryo
Biology; Cell biology

Term applied to the zygote after the beginning of mitosis that produces a multicellular structure.

embryo
Biology; Morphology

An animal or plant in its first stage of development, and is usually still contained within the seed,egg or uterus, is termed as an embryo.

potency
Medical; Stem cell research

The range of commitment options available to a cell.

pluripotent stem cells
Medical; Stem cell research

Stem cells that can develop into all the different cell types in the body except the placenta. They give rise to mulitpotent and unipotent stem cells as the embryo develops.

pluripotent
Medical; Stem cell research

Able to form all the body's cell lineages, including germ cells, and some or even all extraembryonic cell types. Example: embryonic stem cells.

plasticity
Medical; Stem cell research

Unproven notion that tissue stem cells may be able to generate the cell types of another tissue under certain conditions.

placenta
Medical; Stem cell research

The oval spongy structure in the uterus from which the fetus derives its nourishment and oxygen. The placenta develops from the outer cell layer of the blastocyst, called the ...

oocyte
Medical; Stem cell research

An egg before maturation; a female gametocyte; also called an ovocyte.

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