Immunogen sequence: ADQPIDADVT VIGSGPGGYV AAIKAAQLGF KTVCIEKNET LGGTCLNVGC IPSKALLNNS HYYHMAHGKD FASRGIEMSE VRLNLDKMME QKSTAVKALT GGIAHLFKQN KVVHVNGYGK ITGKNQVTAT KADGGTQVID TKNILIATGS EVTPFPGITI DEDTIVSSTG ALSLKKVPEK MVVIGAGVIG VELGSVWQRL GADVTAVEFL GHV