Immunogen sequence: MADTQYILPN DIGVSSLDCR EAFRLLSPTE RLYAYHLSRA AWYGGLAVLL QTSPEAPYIY ALLSRLFRAQ DPDQLRQHAL AEGLTEEEYQ AFLVYAAGVY SNMGNYKSFG DTKFVPNLPK EKLERVILGS EAAQQHPEEV RGLWQTCGEL MFSLEPRLRH LGLGKEGITT YFSGNCTMED AKLAQDFLDS QNLSAYNTRL FKEVDGEGKP YYE