In the united states, donations of tissue and organs are regulated by the federal government, and the national organ transplant act makes it illegal to buy or sell tissues or organs. in 2009, a group of cancer patients filed a lawsuit to allow the purchase of bone marrow to cure their diseases. the court legalized the purchase of bone marrow and set the price at three thousand dollars. donors can now be compensated for bone marrow donations. which of the following is a potential ethical concern that may result from this ruling?