Immunogen sequence: GWMDPGTSRG PDVGVGESQA EEPRSFEVTR REGLSSHNEL LASCGKKFCS RGSRCVLSRK TGEPECQCLE ACRPSYVPVC GSDGRFYENH CKLHRAACLL GKRITVIHSK DCFLKGDTCT MAGYARLKNV LLALQTRLQP LQEGDSRQDP ASQKRLLVES LFRDLDADGN GHLSSSELAQ HVLKKQDLDE DLLGCSPGDL LRFDDYNSDS SLT