Immunogen sequence: MKTPFGKTPG QRSRADAGHA GVSANMMKKR TSHKKHRSSV GPSKPVSQPR RNIVGCRIQH GWKEGNGPVT QWKGTVLDQV PVNPSLYLIK YDGFDCVYGL ELNKDERVSA LEVLPDRVAT SRISDAHLAD TMIGKAVEHM FETEDGSKDE WRGMVLARAP VMNTWFYITY EKDPVLYMYQ LLDDYKEGDL RIMPDSNDSP PAEREPGEVV DSL