3:15 PM. 218. Ultrasound-Controlled Genetic Manipulation of Cells and Spheroids in FRESH 3D-Bioprinted Tumor Models.Mary Lowrey1, Holly Day1, Kevin Schilling, PhD2, Kira Lynch1, Anthony Tahayeri1, Luiz Bertassoni, DDS, PhD1, Carolyn Schutt Ibsen, PhD1 1Oregon Health and Science University, 2Oregon Health& Science University