GFAP and glioblastoma: Interestingly, we observed that FABP7 mRNA expression was conspicuously expressed only in the AF22 neuroepithelial stem (NES) cell line, which is derived from human induced pluripotent stem cells (iPSCs) [29,30], and the U-251 MG glioblastoma cell line, generated from a grade III-IV malignant astrocytoma from a 75-year-old male that expresses EGFR and contains GFAP-positive cells [31,32,33] (Figure S3A).