Immunogen sequence: LFSLSQHINW VRCAKFSPDG RLIVSASDDK TVKLWDKSSR ECVHSYCEHG GFVTYVDFHP SGTCIAAAGM DNTVKVWDVR THRLLQHYQL HSAAVNGLSF HPSGNYLITA SSDSTLKILD LMEGRLLYTL HGHQGPATTV AFSRTGEYFA SGGSDEQVMV WKSNFDIVDH GEVTKVPRPP ATLASSMGNL PEVDFPVPPG RGRSVESVQS QPQ