Immunogen sequence: SKSYYDILGV PKSASERQIK KAFHKLAMKY HPDKNKSPDA EAKFREIAEA YETLSDANRR KEYDTLGHSA FTSGKGQRGS GSSFEQSFNF NFDDLFKDFG FFGQNQNTGS KKRFENHFQT RQDGGSSRQR HHFQEFSFGG GLFDDMFEDM EKMFSFSGFD STNQHTVQTE NRFHGSSKHC RTVTQRRGNM VTTYTDCSGQ; Positive Samp