Immunogen sequence: MQLPRWWELG DPCAWTGQGR GTRRMSPATT GTFLLTVYSI FSKVHSDRNV YPSAGVLFVH VLEREYFKGE FPPYPKPGEI SNDPITFNTN LMGYPDRPGW LRYIQRTPYS DGVLYGSPTA ENVGKPTIIE ITAYNRRTFE TARHNLIINI MSAEDFPLPY QAEFFIKNMN VEEMLASEVL GDFLGAVKNV WQPERLNAIN ITSALDRGGR VPL