9:15 AM. 260. Nascent extracellular matrix converts biomaterial cues into cell fate decisions.Joshua Liu, MS1, Eleanor Plaster2, Mingyue Fan, PhD1, Donia Ahmed, M.S.2, Pamela Duran, PhD2, Peyton Panovich, PhD2, Alexandra Piotrowski-Daspit, PhD2, Carlos Aguilar, PhD2, Megan Killian, PhD2, Claudia Loebel, MD, PhD1 1University of Pennsylvania, 2University of Michigan