Did you know (2).....you have billions of miles of DNA - Dr David Hamilton
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12 سال پیش
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Dr David Hamilton explaining that
Dr David Hamilton explaining that we have billions of miles of DNA throughout the 50-100 trillion cells in our bodies, enough to make several trips to the sun and back.
12 سال پیش
در تاریخ 1391/07/19 منتشر شده
است.
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