Immunogen sequence: RLSIEGNIAV GKSTFVKLLT KTYPEWHVAT EPVATWQNIQ AAGTQKACTA QSLGNLLDMM YREPARWSYT FQTFSFLSRL KVQLEPFPEK LLQARKPVQI FERSVYSDRY IFAKNLFENG SLSDIEWHIY QDWHSFLLWE FASRITLHGF IYLQASPQVC LKRLYQRARE EEKGIELAYL EQLHGQHEAW LIHKTTKLHF EALMNIPVLV LDV