<i>Staphylococcus aureus</i> growing on Columbia horse blood agar
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/nathanreading/">Nathan Reading on Flickr</a> <a rel="nofollow" class="external text" href="https://twitter.com/%nathanr999">Nathan R. on twitter</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/nathanreading/5866841707/in/set-72157628969350851">Flickr</a>