Azari, H., Sharififar, S., Fortin, J. M., Reynolds, B. A. The Neuroblast Assay: An Assay for the Generation and Enrichment of Neuronal Progenitor Cells from Differentiating Neural Stem Cell Progeny Using Flow Cytometry. J. Vis. Exp. (62), e3712, doi:10.3791/3712 (2012).