What are stem cells

Stem cells are a number of cells in the body only when they are not specialized and have the ability to develop into any cell type.

Are different specialized cells in another aspect: the stem cells may replicate many times over long periods of time. This ability is called proliferation. Stem cells can even assist in the repair of muscle or nerve tissue, such as replacement of damaged cells.

Where are you?

These cells can be found in various sources of the body. Its name indicates the source from which they derive.

Embryonic

These come from embryos in the early stages of development. Become slightly more specialized as they mature.

Fetal

These come from a fetus. About nine weeks, a mature embryo enters the fetal stage of development. Fetal stem cells found in fetal tissue and blood and bone marrow.

Umbilical cord

These derived from the umbilical cord. They are similar to those found in mature or adult stem cells.

Placental

They are contained by the placenta. Like the umbilical cord, specialize and develop into specific cell types. The placenta contains several times more stem cells than umbilical cords.

Adult

These are present in mature tissues of infants, children and adults. Also found in blood cells of fetuses and umbilical cords. Are specific to a particular tissue or organ and produce cells within that organ or tissue. Help maintain and repair organs and tissues throughout the life of a person.

Photo | Flickr

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