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Stem Cells and Cell division?

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Stem Cells and Cell division?

Postby CaptainCovalency » Thu Jul 10, 2014 3:54 am

Hello, I am well aware of the concepts of Stem Cells (Cell specialization) and Cell Division (Mitosis), however I am unsure of where their applications lie. I am well aware of the function of embryonic stem cells (As I know that Cell Specialization must occur in order for all our vitals and tissues to be formed). However, somatic (Adult tissue) stem cells I am unsure of. My question is, is that if our vitals and tissues are formed during our embryonic stages of development, then in theory, couldn't mitosis do the rest of the work in replacing these cells continuously, and keeping these tissues alive and functioning? Why must we have somatic stem cells? Can't mitosis be used to replace all dying cells? Basically in a nutshell, in what cases must Cell Specialization occur, and in what cases must Mitosis occur?
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Postby supersapien » Sun Sep 28, 2014 7:20 pm

Cell division demands lot of resources in the form of energy. Therefore, it is easy to have dedicated cells for division and differentiation. Therefore, normal cells can continue doing their tissue function whereas adult stem cells perform their function i.e. dividing and replacing damaged cells.

Also, the question 'why?' seems to be unanswerable. This is the result of evolution. We must understand the origin and evolution of stem cells to understand at what junction during the course of evolution, a need for stem cells arose. Until then it might be a mystery.
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Postby sylviabeata » Tue Oct 14, 2014 4:32 am

hi,
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