Based on progress to date, Dr. Lee was awarded a new grant in 2012 to fund an additional two years of this Scholar award. Natural killer cells (NK cells), one of the white blood cells of our immune system, have the ability to kill several types of cancers in children, including AML, neuroblastoma, osteosarcoma, and Ewing's sarcoma. Dr. Lee's research involves more effective ways to use NK cells to fight childhood cancers.