Immunogen sequence: DFSLMATSLD EKVVSIHQDP KFKWPIIAAE TEGQGTLVKV EMVISESCQK SKRKSVLAVG TANIKVKFGQ NDANPNTSDS RHTGAGVHME NNVSDRRPKK PSQEWGSQEG QYYGSSSMGL MEGRGTTTDR SILQKKKGQE SLLDDNSHLQ TIPSDLTSFP AQVDLPRSNG EMDGNDLMQA SKGLSD; Positive Samples: U-251MG, M