Immunogen sequence: HNSWSSSSRH PNQATPKKSG LKNGQMKNKD DECFGDDIEE IPDTDFDFEG NLALFDKAAV FEEIDTYERR SGTRSRGIPN ERPTRYRHDE NILESEPIVY RRIIVPHNVS KEFCTDSGLV VPSISYELHK KLLSVAEKHG LTLERRLEMT GVCASQMALT LLGGPNRLNP KNVHQRPTVA LLCGPHVKGA QGISCGRHLA NHDVQVILFL PNF