Immunogen sequence: CESIMKKKTK QDFQELIKTE HALLEGFNIR ESTSYIEEHI DRQVSPIESL RLMCLLSITE NGLIPKDYRS LKTQYLQSYG PEHLLTFSNL RRAGLLTEQA PGDTLTAVES KVSKLVTDKA AGKITDAFSS LAKRSNFRAI SKKLNLIPRV DGEYDLKVPR DMAYVFGGAY VPLSCRIIEQ VLERRSWQGL DEVVRLLNCS DFAFTDMTKE DKA