Immunogen sequence: GANISTWVYS SPGRHEGQEP FLQWLMLLSN ESALPHVHTV SYGDDEDSLS SAYIQRVNTE LMKAAARGLT LLFASGDSGA GCWSVSGRHQ FRPTFPASSP YVTTVGGTSF QEPFLITNEI VDYISGGGFS NVFPRPSYQE EAVTKFLSSS PHLPPSSYFN ASGRAYPDVA ALSDGYWVVS NRVPIPWVSG TSASTPVFGG ILSLINEHRI LSG