Immunogen sequence: MAEISDLDRQ IEQLRRCELI KESEVKALCA KAREILVEES NVQRVDSPVT VCGDIHGQFY DLKELFRVGG DVPETNYLFM GDFVDRGFYS VETFLLLLAL KVRYPDRITL IRGNHESRQI TQVYGFYDEC LRKYGSVTVW RYCTEIFDYL SLSAIIDGKI FCVHGGLSPS IQTLDQIRTI DRKQEVPHDG PMCDLLWSDP EDTTGWGVSP RGA