Immunogen sequence: FDSSYSRNHT YNTYIGQGYI IPGMDQGLQG ACMGERRRIT IPPHLAYGEN GTGDKIPGSA VLIFNVHVID FHNPADVVEI RTLSRPSETC NETTKLGDFV RYHYNCSLLD GTQLFTSHDY GAPQEATLGA NKVIEGLDTG LQGMCVGERR QLIVPPHLAH GESGARGVPG SAVLLFEVEL VSREDGLPTG YLFVWHKDPP ANLFEDMDLN KDG