The Portacaval Shunt
This image is a trichrome stain showing cirrhosis of the liver. Cirrhosis can be combatted by the portacaval shunt procedure, for which there have been numerous experimental trials using randomized assignment.
Source
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"Cirrhosis of the liver (trichrome stain) | Flickr - Photo Sharing!."
http://www.flickr.com/photos/euthman/5690946257/
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