Immunogen sequence: ASEFQRSFKH DVRGNARAMM KLTNSAEVAK HSLSTLGSAN CFLDSLYEGQ DFDCNVSRAR FELLCSPLFN KCIEAIRGLL DQNGFTADDI NKVVLCGGSS RIPKLQQLIK DLFPAVELLN SIPPDEVIPI GAAIEAGILI GKENLLVEDS LMIECSARDI LVKGVDESGA SRFTVLFPSG TPLPARRQHT LQAPGSISSV CLELYESDGK NSA