9:45 AM. 347. Towards Reliable Tracking of Natural Killer Cells Using Commercial Iron Oxide Nanoparticles and Magnetic Particle Imaging.Suzanne Lightsey1, Victoria Consalvo1, SK Rajab Ali, PhD1, Daniela Paula Valdes, PhD1, Jeremiah Oyer, PhD2, Alicja Copik, PhD2, Carlos Rinaldi-Ramos1, Blanka Sharma, PhD1 1University of Florida, 2University of Central Florida