Immunogen sequence: MRAGPEPQAL AGQKRGALRL LVPRLVLTVS APAEVRRRVL RPVLSWMDRE TRALADSHFR GLGVDVPGVG QAPGRVAFVS EPGAFSYADF VRGFLLPNLP CVFSSAFTQG WGSRRRWVTP AGRPDFDHLL RTYGDVVVPV ANCGVQEYNS NPKEHMTLRD YITYWKEYIQ AGYSSPRGCL YLKDWHLCRD FPVEDVFTLP VYFSSDWLNE FWD