Immunogen sequence: MREPEELMPD SGAVFTFGKS KFAENNPGKF WFKNDVPVHL SCGDEHSAVV TGNNKLYMFG SNNWGQLGLG SKSAISKPTC VKALKPEKVK LAACGRNHTL VSTEGGNVYA TGGNNEGQLG LGDTEERNTF HVISFFTSEH KIKQLSAGSN TSAALTEDGR LFMWGDNSEG QIGLKNVSNV CVPQQVTIGK PVSWISCGYY HSAFVTTDGE LYV