Immunogen sequence: EDSDTRCAAR VMARPRFGAP HASESCSKNG PERGGQDGKA SLEAHRDAPG AGAPPAPGKK EAPPVEGDSE GAMWTAVFDE PANSTPTAPG VVRDVGSSVW AAGTSAPEEK GWAKFTDFQP FCCSESGPRC SSPVDTECSH AEGSRSQGPE KAFSPASPCA WNVCVTRKAP LLASDSSSSG GSHSEDGDQK AASAMDAVSR GPGREAPPLP TVA