Immunogen sequence: WSCCHQQAEK KQKNPPYKFI HMLKGISIYP ETLSNKKKII KVRRDKDGPG REGGRRNLLV DAAEAGLLSR DKDPRGPSSG SCIDQLPIKM DYGEELRSPI TSLTPGESKT TSPSSPEEDV MLGSLTFSVD YNFPKKALVV TIQEAHGLPV MDDQTQGSDP YIKM; Positive Samples: U-251MG, Mouse brain, Rat brain; C