Immunogen sequence: MAAAAASHLN LDALREVLEC PICMESFTEE QLRPKLLHCG HTICRQCLEK LLASSINGVR CPFCSKITRI TSLTQLTDNL TVLKIIDTAG LSEAVGLLMC RSCGRRLPRQ FCRSCGLVLC EPCREADHQP PGHCTLPVKE AAEERRRDFG EKLTRLRELM GELQRRKAAL EGVSKDLQAR YKAVLQEYGH EERRVQDELA RSRKFFTGSL AEV