8:15 AM. 365. Granular Hydrogel-Based Perivascular Niche Models to Examine Glioblastoma Invasion.Joel Kattoor1, Brittany Payan, B.S.2, Tejasvi Anand, B.S.1, Brendan Harley3 1University of Illinois Urbana-Champaign, 2University of Illinois Urbana Champaign, 3University of Illinois at Urbana Champaign