<a href="https://en.wikipedia.org/wiki/Scanning_Electron_Microscope" class="extiw" title="en:Scanning Electron Microscope">en:Scanning Electron Microscope</a> image of an ant.
US Government
<a rel="nofollow" class="external free" href="https://usgsprobe.cr.usgs.gov/picts.html">http://usgsprobe.cr.usgs.gov/picts.html</a> via en.wikipedia.org