Immunogen sequence: MEEEGKKGKK PGIVSPFKRV FLKGEKSRDK KAHEKVTERR PLHTVVLSLP ERVEPDRLLS DYIEKEVKYL GQLTSIPGYL NPSSRTEILH FIDNAKRAHQ LPGHLTQEHD AVLSLSAYNV KLAWRDGEDI ILRVPIHDIA AVSYVRDDAA HLVVLKTAQD PGISPSQSLC AESSRGLSAG SLSESAVGPV EACCLVILAA ESKVAAEELC CLL