Optimization of Viable Glioblastoma Cryopreservation for Establishment of Primary Tumor Cell Cultures Klara Valyi-Nagy, Fay Betsou, Alexandru Susma, and Tibor Valyi-Nagy. Optimization of Viable Glioblastoma Cryopreservation for Establishment of Primary Tumor Cell Cultures. BIOPRESERVATION AND BIOBANKING. doi: 10.1089/bio.2020.0050