Immunogen sequence: SRLHPVPVPA DWMNRMEVNE TQYNEMFGMV LAPAEGTHPG IAPQSRPPEG KHITTPREPL PPIVTFQLIP KGSIAQPAGA PQPQSTCPPA VAGPLPTMYQ IPEMARLPSV AFPTAMMPQQ DGQVAQTILP AYHPFPASVG KYPTPPSQHS YASSNAAERT PSHSGHLQGE HPYLTPSPES PDQWSSSSPH SASDWSDVTT SPTPGGAGGG QRG