Immunogen sequence: AAVQVRVRMG TEPRHFMAIF KGKLVIFEGG TSRKGNAEPD PPVRLFQIHG NDKSNTKAVE VPAFASSLNS NDVFLLRTQA EHYLWYGKGS SGDERAMAKE LASLLCDGSE NTVAEGQEPA EFWDLLGGKT PYANDKRLQQ EILDVQSRLF ECSNKTGQFV VTEITDFTQD DLNPTDVMLL DTWDQVFLWI GAEANATEKE SALATAQQYL HTH