8:00 AM. 122. 4D Extracellular Matrix Platform Models Human Cytotoxic T Cell Interactions with β-cells in Type 1 Diabetes.Magdalena Samojlik1, Min Du, M.S.1, Austin Kratz, B.S.1, Matthew Brown1, Todd Brusko1, Edward Phelps1, Holger Russ1, Cherie Stabler1 1University of Florida