Cerebellar radial glia cells develop from neuroepithelial cells and give rise to Bergmann glia. Radial glia cells morphologically resemble neuroepithelial cells, with a long basal process in the outer (pial) surface and a shorter apical process that contacts the lumen of the ventricular zone. Radial glia can be distinguished from neuroepithelial progenitor cells by the expression of astrocyte markers such as Blbp, Glast.