Immunogen sequence: MDLPVDEWKS YLLQKWASLP TSVQVTISTA ETLRDIFLHS SSLLQPEDEL FLKRLSKGYL VGKDSDAPLF YREEGNKKFQ EKDYTGAAVL YSKGVSHSRP NTEDMSLCHA NRSAALFHLG QYETCLKDIN RAQTHGYPER LQPKIMLRKA ECLVALGRLQ EASQTISDLE RNFTATPALA DVLPQTLQRN LHRLKMKMQE KDSLTESFPA ALA