Unicellular bacteria from a microbial mat in Guerrero Negro, Baja California, Mexico.
<p>Light microscope view.
</p>
(see also <a rel="nofollow" class="external free" href="http://microbes.arc.nasa.gov/gallery/lightms.html">http://microbes.arc.nasa.gov/gallery/lightms.html</a>)
NASA
<a rel="nofollow" class="external free" href="http://microbes.arc.nasa.gov/images/content/gallery/lightms/publication/unicells.jpg">http://microbes.arc.nasa.gov/images/content/gallery/lightms/publication/unicells.jpg</a>