S18-082 Use of Polyvinyl Alcohol for Chimeric Antigen Receptor T-Cell Expansion Researchers at Stanford have developed chemically defined, polyvinyl alcohol (PVA)-based media for culturing hematopoietic stem cells and immune cells (e.g., T cells). Adam Wilkinson Hiromitsu Nakauchi Satoshi Yamazaki Kyle Loh Toshinobu Nishimura