Immunogen sequence: MADFDDRVSD EEKVRIAAKF ITHAPPGEFN EVFNDVRLLL NNDNLLREGA AHAFAQYNMD QFTPVKIEGY EDQVLITEHG DLGNSRFLDP RNKISFKFDH LRKEASDPQP EEADGGLKSW RESCDSALRA YVKDHYSNGF CTVYAKTIDG QQTIIACIES HQFQPKNFWN GRWRSEWKFT ITPPTAQVVG VLKIQVHYYE DGNVQLVSHK DVQ