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Sinopse: ilustração da fita de DNA.
Fonte: "1bna naba ribbon v" by Dcrjsr - Own work. Licensed under Creative Commons Attribution 3.0 via Wikimedia Commons.
URL: http://commons.wikimedia.org/wiki/File:1bna_naba_ribbon_v.png#mediaviewer/File:1bna_naba_ribbon_v.png
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