DNA strand showing Chemical structure of nucleic Acid Bases
<ul><li><a href="//commons.wikimedia.org/w/index.php?title=File:Dna_strand3.png&amp;action=edit&amp;redlink=1" class="new" title="File:Dna strand3.png (page does not exist)">Dna_strand3.png</a>: <a href="//commons.wikimedia.org/w/index.php?title=User:Boumphreyfr&amp;action=edit&amp;redlink=1" class="new" title="User:Boumphreyfr (page does not exist)">Boumphreyfr</a></li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Vojtech.dostal" title="User:Vojtech.dostal">Vojtech.dostal</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Vojtech.dostal" class="mw-redirect" title="User talk:Vojtech.dostal"><span class="signature-talk">talk</span></a>)</li></ul>
CC BY-SA 3.0
<ul><li><a href="//commons.wikimedia.org/w/index.php?title=File:Dna_strand3.png&amp;action=edit&amp;redlink=1" class="new" title="File:Dna strand3.png (page does not exist)">Dna_strand3.png</a></li></ul>