The body cavities.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Scheme_body_cavities-en.svg" title="File:Scheme body cavities-en.svg">Scheme_body_cavities-en.svg</a>: NCI (original) / <a href="https://en.wikipedia.org/wiki/User:Mysid" class="extiw" title="w:User:Mysid">Mysid</a> (SVG)</li>
<li>derivative work: <a href="//commons.wikimedia.org/w/index.php?title=User:Tevfik_A.&amp;action=edit&amp;redlink=1" class="new" title="User:Tevfik A. (page does not exist)">Tevfik A.</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Tevfik_A." title="User talk:Tevfik A."><span class="signature-talk">talk</span></a>)</li></ul>
2010-07-21 00:26
<ul><li><a href="//commons.wikimedia.org/wiki/File:Scheme_body_cavities-en.svg" title="File:Scheme body cavities-en.svg">Scheme_body_cavities-en.svg</a></li></ul>