Immunogen sequence: MGEPGFFVTG DRAGGRSWCL RRVGMSAGWL LLEDGCEVTV GRGFGVTYQL VSKICPLMIS RNHCVLKQNP EGQWTIMDNK SLNGVWLNRA RLEPLRVYSI HQGDYIQLGV PLENKENAEY EYEVTEEDWE TIYPCLSPKN DQMIEKNKEL RTKRKFSLDE LAGPGAEGPS NLKSKINKVS CESGQPVKSQ GKGEVASTPS DNLDPKLTAL EPS