Immunogen sequence: MLWLLFFLVT AIHAELCQPG AENAFKVRLS IRTALGDKAY AWDTNEEYLF KAMVAFSMRK VPNREATEIS HVLLCNVTQR VSFWFVVTDP SKNHTLPAVE VQSAIRMNKN RINNAFFLND QTLEFLKIPS TLAPPMDPSV PIWIIIFGVI FCIIIVAIAL LILSGIWQRR RKNKEPSEVD DAEDKCENMI TIENGIPSDP LDMKGGHIND AFM