bone marrow
Kelly Lawrence, 19th Medical Group registered nurse for the Family Health Center and coordinator of the base bone-marrow drive, explains volunteering directions to a Team Little Rock Member April 13, 2012, at Little Rock Air Force Base, Ark. Once a person completes the swabbing process, their name will be in the donor registry until they turn 61 years old. (U.S. Air Force photo by Airman 1st Class Regina Agoha)