Immunogen sequence: IADNNRVREE HQGENLDENL VPVAAAEGRP RLNQHNHFFH FDGSRIASWL PSFSVEVMHT TNILGITQAS NSQLNAMAHQ IQEMFPQVPY HLVLQDLQLT RSVEITTDNI LEGRIQVPFP TQRSDSIRPA LNSPVERPSS DQEEGETSAQ TERVPLDLSP RLEETLDFGE VEVEPSEVED FEARGSRFSK SADERQRMLV QRKDELLQQA RKR