OLIG2 and glioblastoma: A recent study using a large cohort of human GBM samples showed moderate to high levels of expression of human neural stem cell marker nestin and committed progenitor markers like Olig2, GFAP, Tuj1 and Dcx (neurons), but only few cells expressed terminally differentiated markers such as MBP (for oligodendrocytes) and NeuN (for neurons) [38].