A set of petri dish Christmas tree ornaments <a href="http://bioengineer.org/wp-content/uploads/2014/12/2869266381.jpg"><img src="http://bioengineer.org/wp-content/uploads/2014/12/2869266381.jpg" alt="286926638" width="500" height="445" class="alignnone size-full wp-image-5575" /></a> <a href="http://bioengineer.org/wp-content/uploads/2014/12/1.jpg"><img src="http://bioengineer.org/wp-content/uploads/2014/12/1.jpg" alt="1" width="500" height="617" class="alignnone size-full wp-image-5576" /></a> <a href="http://bioengineer.org/wp-content/uploads/2014/12/2.jpg"><img src="http://bioengineer.org/wp-content/uploads/2014/12/2.jpg" alt="2" width="500" height="681" class="alignnone size-full wp-image-5577" /></a> <a href="http://bioengineer.org/wp-content/uploads/2014/12/3.jpg"><img src="http://bioengineer.org/wp-content/uploads/2014/12/3.jpg" alt="3" width="500" height="561" class="alignnone size-full wp-image-5578" /></a> <strong>Story Source:</strong> The above story is based on materials provided by Etsy, Michele Banks.