Immunogen sequence: QIKDLGSELV RYDARVHTPH LDRLVSARSV SPTTEMVSNE SVDYRATFPE DQFPNSSQNG SCRQVQYPLT DMSPILTSGD SDISSPLLQN TVHIDLSALN PELVQAVQHV VIGPSSLIVH FNEVIGRGHF GCVYHGTLLD NDGKKIHCAV KSLNRITDIG EVSQFLTEGI IMKDFSHPNV LSLLGICLRS EGSPLVVLPY MKHGDLRNFI RNE