The generosity of American organ donors has saved 500,000 lives nationally as of May 19, 2015. That is enough people to fill the Carolina Panther's stadium almost seven times - or to replace the entire city population of Greensboro, twice. The national transplant allocation system developed by United Network for Organ Sharing (UNOS) has coordinated 500,000 organ transplants from deceased donors in the United States since its beginning in October 1987. More than 250,000 recipients of these transplants are estimated to be surviving. Since that time, there have been 14,887 deceased donor transplants in NC.