Immunogen sequence: MAAAAVVVPA EWIKNWEKSG RGEFLHLCRI LSENKSHDSS TYRDFQQALY ELSYHVIKGN LKHEQASNVL SDISEFREDM PSILADVFCI LDIETNCLEE KSKRDYFTQL VLACLYLVSD TVLKERLDPE TLESLGLIKQ SQQFNQKSVK IKTKLFYKQQ KFNLLREENE GYAKLIAELG QDLSGSITSD LILENIKSLI GCFNLDPNRV LDV