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 | Subject: Stem Cells  Sat Jan 17, 2009 8:29 pm | |
| Stem cells are cells that divide by mitosis to form either
- two stem cells, thus increasing the size of the stem cell "pool",
- or
- one daughter that goes on to differentiate, and
- one daughter that retains its stem-cell properties.
How the choice is made is still unknown. However, several genes have
been found whose activity prevents a daughter cell from
differentiating.
Several adjectives are used to describe the developmental
potential of stem cells; that is, the number of different kinds of
differentiated cell that they can become.
Read more.................>> | |
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