Immunogen sequence: AKGVNKEFTV NIMDTCERCN GKGNEPGTKV QHCHYCGGSG METINTGPFV MRSTCRRCGG RGSIIISPCV VCRGAGQAKQ KKRVMIPVPA GVEDGQTVRM PVGKREIFIT FRVQKSPVFR RDGADIHSDL FISIAQALLG GTARAQGLYE TINVTIPPGT QTDQKIRMGG KGIPRINSYG YGDHYIHIKI RVPKRLTSRQ QSLILSYAED ETD