Immunogen sequence: MAKRIKAKPT SDKPGSPYRS VTHFDSLAVI DIPGADTLDK LFDHAVSKFG KKDSLGTREI LSEENEMQPN GKVFKKLILG NYKWMNYLEV NRRVNNFGSG LTALGLKPKN TIAIFCETRA EWMIAAQTCF KYNFPLVTLY ATLGKEAVVH GLNESEASYL ITSVELLESK LKTALLDISC VKHIIYVDNK AINKAEYPEG FEIHSMQSVE ELG