Chronic and antibody-mediated rejection (AMR) has been increasingly studied in nonhuman primate (NHP) transplant models. Smith et al. reviewed their NHP experience in renal transplantation with mixed chimerism induction, and elegantly described morphologic changes associated with chronic antibody-mediated rejection.
After that, Hoover thought he had more money than he and his family needed. He decided to use his great administrative skills for the rest of his working life in government service and private charity. During World War I, Hoover ran the official U.S. relief agency helping the suffering people in Belgium.
Hoover also sparred with subsequent attorneys general and more frequently became a target of the media. He died on May 2, 1972, at age 77 in the midst of controversy stirred by allegations of illegal FBI activities. J. Edgar Hoover served for nearly 50 years under no fewer than eight presidents, from Calvin Coolidge to Richard M. Nixon. It is because of the Hoover tenure that subsequent FBI directors were limited to 10 years in office.