SOX2 and glioblastoma: SOX2 3’UTR and downstream region (1399–2686): With all the overlapping primer pairs used in covering the entire 3’ UTR region, sequence BLAST analysis of the PCR product shows that region from 1390 to 2686 of SOX 2 gene (Gene ID: 6657) is successfully amplified for NSC, GBM as well as CD133+ GBM derived exosomes.