I want to know the answer to the following question:
What is copper bound with when it is sent to the liver?
All the background I'm provided with is that "Copper in the body normally undergoes enterohepatic circulation (about 5 mg a day, vs. about 1 mg per day absorbed in the diet and excreted from the body), and the body is able to excrete some excess copper, if needed, via bile, which carries some copper out of the liver that is not then reabsorbed by the intestine.". Is that enough to answer the question?
Answer: no