Mayo Clinic in Jacksonville, Florida, and United Therapeutics Corporation (NASDAQ: UTHR) today announced a collaboration to build and operate a lung restoration center on the Mayo campus. The goal is to significantly increase the volume of lungs for transplantation by preserving and restoring selected marginal donor lungs, making them viable for transplantation. The restored lungs will be made available to patients at Mayo Clinic and other transplant centers throughout the United States.