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Stem cells originate from two main sources: adult body tissues and embryos. Scientists are also working on ways to develop stem cells from other cells, using genetic “reprogramming”...
Where Do Stem Cells Come From? Embryonic Stem Cells. This is the source that caused so much controversy when stem cells first appeared on the political scene. Embryonic stem cells are derived from blastocysts – human embryos only a few days old, usually the result of IVF (in-vitro fertilization), and donated by IVF patients with informed consent.
Get answers about where stem cells come from, why they're important for understanding and treating disease, and how they are used.
Adult stem cells, called somatic stem cells, are derived from a human donor. Hematopoietic stem cells are the most widely known example. Scientists have found somatic stem cells in more tissues than was once imagined, including the brain, skeletal muscle, skin, teeth, heart, gut, liver, ovarian cells, and testis.
Most adult stem cells are lineage-restricted (multipotent) and are generally referred to by their tissue origin (mesenchymal stem cell, adipose-derived stem cell, endothelial stem cell, dental pulp stem cell, etc.).
stem cell, an undifferentiated cell that can divide to produce some offspring cells that continue as stem cells and some cells that are destined to differentiate (become specialized). Stem cells are an ongoing source of the differentiated cells that make up the tissues and organs of animals and plants.
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