PDGFRα was also highly coexpressed by the ASCL1+ (Figure 4k) and OLIG2+ (not shown) tumor cells, whereas GFAP and to a lesser extent S100β and NEUN, although found in some parts of the tumor, did not overlap significantly with SOX2 or ASCL1 (Figure 4l–n). This evidence concerns the gene S100B and neoplasm.