Immunogen sequence: MANALASATC ERCKGGFAPA EKIVNSNGEL YHEQCFVCAQ CFQQFPEGLF YEFEGRKYCE HDFQMLFAPC CHQCGEFIIG RVIKAMNNSW HPECFRCDLC QEVLADIGFV KNAGRHLCRP CHNREKARGL GKYICQKCHA IIDEQPLIFK NDPYHPDHFN CANCGKELTA DARELKGELY CLPCHDKMGV PICGACRRPI EGRVVNAMGK QWH