Immunogen sequence: LNATYIFNGL TVSVPGMEKA LHQYTLEPSE KPFDMKSIPL AMAPVFEQKA EITLVATKPE KLAPSRQDIF QEQLAAIPEF LNIGPLFKSS EPVQLTEAET EYFVRCIKHM FTNHIVFQFD CTNTLNDQLL EKVTVQMEPS DSYEVLSCIP APSLPYNQPG ICYTLVRLPD DDPTAVAGSF SCTMKFTVRD CDPNTGVPDE DGYDDEYVLE DLE