Immunogen sequence: IQKAFAVAFG INVLAANVHH PVLGMTGSGI HTPLESFWYH DMENPKSHLI IAQVAKNPVG LIGAENATGE TDPSHSKFLK ILSGDPYCEK DAQEVHCDEA TKWNVNAPPT FHSEMMYDNF TLVPVWGKEG YLHVCSNGLC CYLLYERPTL SKELYALGVF DGLHTVHGTY YIQVCALVRC GGLGFDTCGQ EITEATGIFE FHLWGNFSTS YIF