Immunogen sequence: FHRDSWHLRH QVLLHVGLPP REPVLSCRSN TYPKGFYCSW HLPTPTYIPN TFNVTVLHGS KIMVCEKDPA LKNRCHIRYM HLFSTIKYKV SISVSNALGH NATAITFDEF TIVKPDPPEN VVARPVPSNP RRLEVTWQTP STWPDPESFP LKFFLRYRPL ILDQWQHVEL SDGTAHTITD AYAGKEYIIQ VAAKDNEIGT WSDWSVAAHA TPW