Blood vessels imaged with sidestream dark field imaging. 
<p>Original figure legend: 
</p>
"Digital photomicrographs of the cerebral cortical microcirculation of a septic animal at baseline."
Fabio Silvio Taccone, Fuhong Su, Charalampos Pierrakos, Xinrong He, Syril James, Olivier Dewitte, Jean-Louis Vincent and Daniel De Backer
CC BY 2.0
Critical Care 2010, 14:R140.  <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1186%2Fcc9205">10.1186/cc9205</a> Figure 7.