Brain of a four-week old human embryo (ru).
<a href="//commons.wikimedia.org/wiki/User_talk:Kurzon" title="User talk:Kurzon">Kurzon</a>, <a href="//commons.wikimedia.org/wiki/User:%D0%AE%D0%BA%D0%B0%D1%82%D0%B0%D0%BD" title="User:Юкатан">Юкатан</a>
2011-05-17
<a href="//commons.wikimedia.org/wiki/File:4_week_embryo_brain.jpg" title="File:4 week embryo brain.jpg">File:4 week embryo brain.jpg</a>