Immunogen sequence: GRLWAAQRIQ EGARNISNQL SIGTDISAQH PELRTHAQAK GWWDGQGAFD FAQIFSLTQQ PVRMEAAKAR FQAGRELLRQ RQGGITAEVM MGILRDKESG ICMDSGGFRT TASMVSVLPQ DPTQPCVHFL TATPDPSRSV FKPFIFGMGV AQAPQVLSPT FGAQDPVRTL PRFQTQVDRR HTLYRGHQAA LGLMERDQDR GQQLQQKQQD LEQ