They are special cells that have the ability to do 2 key 1) divide for...
Transcript of They are special cells that have the ability to do 2 key 1) divide for...
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They are special cells that have the ability to do 2 key things;
1) divide for indefinite periods
2) give rise to specialized cells (muscle cells, red blood cells, brain cells)
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1. From the inner cell mass of human embryos from IVF (In Vitro Fertilization).
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2. From the fetal tissue obtained from terminated pregnancies.
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3. Somatic Cell Nuclear Transfer (SCNT)
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4. Adult Stem Cells
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stem cells from adults have not been isolated for all tissues of the body
adult stem cells are often present in only minute quantities, are difficult to isolate and purify, and their numbers may decrease with age
for some acute disorders, there may not be enough time to grow enough cells to use for treatment
adult stem cells may contain more DNA abnormalities or the genetic defect that caused the disorders
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