Posted by m on Thursday, April 1, 2010 at 10:17pm.
Try some of the sites here:
http://www.google.com/search?q=how+some+cells+become+brain+cells+%26+others+skin+cells+when+the+DNA+is+the+same&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
Sra
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