Immunogen sequence: LERVKELQAE QEDRALRSFK LSVTVDPKYH PKIIGRKGAV ITQIRLEHDV NIQFPDKDDG NQPQDQITIT GYEKNTEAAR DAILRIVGEL EQMVSEDVPL DHRVHARIIG ARGKAIRKIM DEFKVDIRFP QSGAPDPNCV TVTGLPENVE EAIDHILNLE EEYLADVVDS EALQVYMKPP AHEEAKAPSR GFVVRDAPWT ASSSEKAPDM SSS