Immunogen sequence: MTNTKGKRRG TRYMFSRPFR KHGVVPLATY MRIYKKGDIV DIKGMGTVQK GMPHKCYHGK TGRVYNVTQH AVGIVVNKQV KGKILAKRIN VRIEHIKHSK SRDSFLKRVK ENDQKKKEAK EKGTWVQLKR QPAPPREAHF VRTNGKEPEL LEPIPYEFMA; Positive Samples: HT-29, Raji, BxPC-3, DU145, Mouse liver