1:45 PM. 173. Cardiac bilayer tissues modeling cardiomyocyte-mediated fibrotic switch of myofibroblasts.Emmanouil Agrafiotis, PhD1, Samuel J. DePalma, PhD2, Gonzalo Anyosa1, Katie Kim3, Darcy D. Huang4, Anya G. Coffeen Vandeven5, Austin E. Stis6, Jingyi Xia1, Brendon M. Baker, PhD3 1UNIVERSITY OF MICHIGAN, 2Broad Institute, 3UNIVERSITY OF MICHIGAN- ANN ARBOR, 4University of Pennsylvani, 5HSS/Weill Cornell, 6University of Florida