Your body's real age

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Do all of your cells get switched out for new ones every seven years or so? Does anything remain with you throughout your entire life? These are the questions addressed by NPR's Skunk Bear. 


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Additional Resources for you to Explore
Skunk Bear's Tumblr post on cell regeneration: 
http://skunkbear.tumblr.com/post/146593746334/c14
Invisibilia's episode on personality: 
http://www.npr.org/programs/invisibilia/482836315/...
TED-Ed: How do cancer cells behave differently from normal cells?
TED-Ed: The immortal cells of Henrietta Lacks
Standford's institute for stem cell biology:
http://med.stanford.edu/stemcell.html
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