Immunogen sequence: MKSVIYHALS QKEANDSDVQ PSGAQRAEAF VRAFLKRSTP RMSPQAREDQ LQRKAVVLEY FTRHKRKEKK KKAKGLSARQ RRELRLFDIK PEQQRYSLFL PLHELWKQYI RDLCSGLKPD TQPQMIQAKL LKADLHGAII SVTKSKCPSY VGITGILLQE TKHIFKIITK EDRLKVIPKL NCVFTVETDG FISYIYGSKF QLRSSERSAK KFK