Immunogen sequence: MVSTPENRQT FITSVIKFLR QYEFDGLDFD WEYPGSRGSP PQDKHLFTVL VQEMREAFEQ EAKQINKPRL MVTAAVAAGI SNIQSGYEIP QLSQYLDYIH VMTYDLHGSW EGYTGENSPL YKYPTDTGSN AYLNVDYVMN YWKDNGAPAE KLIVGFPTYG HNFILSNPSN TGIGAPTSGA GPAGPYAKES GIWAYYEICT FLKNGATQGW DAP