Immunogen sequence: YANDAAISEP ESVVSSLQGH RNFPTGTVPK WDSHIRAALS IERRKKRSTG VLLPLQNNEL PGAEYQYKKD EVWEERKPYK TLQAQAPEKS KNKKKQRKGP HRKSQTLQFD EQTLKKARRK QWIEPRNCAR RYLKVDFADI GWSEWIISPK SFDAYYCSGA CQFPMPKSLK PSNHATIQSI VRAVGVVPGI PEPCCVPEKM SSLSILFFDE NKN