Laboratory cultures of <a href="//commons.wikimedia.org/wiki/Drosophila_melanogaster" title="Drosophila melanogaster">Drosophila melanogaster</a>
<a href="//commons.wikimedia.org/wiki/User:Trick17" title="User:Trick17">Trick17</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>