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100 Interesting Science Facts

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posted on Nov, 16 2009 @ 07:53 AM
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reply to post by nataylor
 


Good thinking there, I was going by the way they mentioned a 'complete circuit' as if the blood cell did go down each and every blood vessel



posted on Nov, 24 2009 @ 06:16 AM
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reply to post by Now_Then
 


Thanks for the information I will take a look at this theory.



 
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