First of all, I think it's funny people go to "mamashealth.com" for medical information.

Yes, the liver performs all of those functions listed, but it is also the main site of blood filtration to remove Iron and other metals as well as toxins in addition to producing multiple proteins and clotting factors.

So basically if the deer had eaten any plants with pesticides on them, the liver via the CPY450 enzymes or another enzyme family would have removed those chemicals and stored them to some level or another. Thusly you could be ingesting a nice dose of organophosphates with your liver.