Immunogen sequence: ADAVQDSEMV ELVELEIREL LTEFGYKGEE TPVIVGSALC ALEGRDPELG LKSVQKLLDA VDTYIPVPAR DLEKPFLLPV EAVYSVPGRG TVVTGTLERG ILKKGDECEL LGHSKNIRTV VTGIEMFHKS LERAEAGDNL GALVRGLKRE DLRRGLVMVK PGSIKPHQKV EAQVYILSKE EGGRHKPFVS HFMPVMFSLT WDMACRIILP PEK