Immunogen sequence: MAKLLQPPPK FLPSEWHIAN KNQYHRADAQ RSRSERLVAE SQRLVDEIEK TTRKSQSDVN KKLEQRLEEV QFWKKELDDK LEQLVNVTDD LLIYKIRLEK ALETLKEPLH ITETCLAYRE KRIGIDLVHD TVEHELIKEA EIIQGIMALL TRTLEEASEQ IRMNRSAKYN LEKDLKDKFV ALTIDDICFS LNNNSPNIRY SENAVRIEPN SVS