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ewheat
Joined: 17 Nov 2012
Posts: 10
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 Posted: Sun Nov 18, 2012 6:35 pm Post subject: Stem cells |
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Stem cells are cells found in most multi-cellular organisms. They are characterized by the ability to renew themselves through mitotic cell division and differentiating into a diverse range of specialized cell types. Research in the stem cell field grew out of findings by Canadian scientists Ernest A. McCulloch and James E. Till in the 1960s.
Stem cells can develop into any cell type. They are valuable as research tools and might, in the future, be used to treat a wide range of diseases.
The two broad types of mammalian stem cells are: embryonic stem cells that are isolated from the inner cell mass of blastocysts, and adult stem cells that are found in adult tissues. In a developing embryo, stem cells can differentiate into all of the specialized embryonic tissues. In adult organisms, stem cells and progenitor cells act as a repair system for the body, replenishing specialized cells, but also maintain the normal turnover of regenerative organs, such as blood, skin, or intestinal tissues.
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babynancy543
Joined: 07 Dec 2012
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| Posted: Fri Dec 07, 2012 11:26 am Post subject: |
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How come the stem cells produced by leukemia do not become specialized?
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orvalosbert
Joined: 06 Jan 2013
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| Posted: Sun Jan 06, 2013 6:32 pm Post subject: |
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Stem cells are unique because they combine two key properties: Pluripotency and self-renewal.
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neelyharold
Joined: 10 Jan 2013
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| Posted: Thu Jan 10, 2013 7:46 am Post subject: |
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Stem cells are unique because they combine two key properties: Pluripotency and self-renewal. Pluripotency means that they can differentiate and give rise to multiple different cell types.
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