 Several characterizing factors lead to the proposed idea of neuronal stem cells (NSCs) being the origin for BTSCs, as they share several features.These features are shown in the figure.This group provides evidence of the SVZ's apparent role in tumorigenesis as demonstrated by the possession of mitogenic receptors and their response to mitogenic stimulation, specifically type C cells that express the epidermal growth factor receptor (EGFR), making them highly proliferative and invasive.