In this case as well, we characterized homogeneous populations of cells that captured different disease stages, namely primary, non-tumorigenic NP sourced from E13.5 telencephali (hereafter NP), tumorigenic NP overexpressing PDGF-B (hereafter NP PDGFB) and GPCs derived from primary tumours (hereafter PT) that were able to regrow tumours upon orthotopic transplantation. This evidence concerns the gene PDGFB and neoplasm.