Spina, R., Voss, D. M., Asnaghi, L., Sloan, A., Bar, E. E. Flow Cytometry-based Drug Screening System for the Identification of Small Molecules That Promote Cellular Differentiation of Glioblastoma Stem Cells. J. Vis. Exp. (131), e56176, doi:10.3791/56176 (2018).