Immunogen sequence: EETLYSDQEL AYLQQGEEAM QKALGILSNQ EGWKKESQQD NGDKVMSKVV PDVGKVFRLE VVVDQPMERL YEELVERMEA MGEWNPNVKE IKVLQKIGKD TFITHELAAE AAGNLVGPRD FVSVRCAKRR GSTCVLAGMA TDFGNMPEQK GVIRAEHGPT CMVLHPLAGS PSKTKLTWLL SIDLKGWLPK SIINQVLSQT QVDFANHLRK RLE