Immunogen sequence: IDCQQYHSFC AQENVQRYPE IRFFPPKSNK AYHYHSYNGW NRDAYSLRIW GLGFLPQVST DLTPQTFSEK VLQGKNHWVI DFYAPWCGPC QNFAPEFELL ARMIKGKVKA GKVDCQAYAQ TCQKAGIRAY PTVKFYFYER AKRNFQEEQI NTRDAKAIAA LISEKLETLR NQGKRNKDEL; Positive Samples: U-87MG, HT-29, SK