Immunogen sequence: KTILENSVKH SKALNTLSSP GQSSFSHGTR NNSAKENMEK EKPVKRKMKS SVLPKASTLS KSSAVIEQGD CKNNALVPGT IQVNGHGGQP SKLVKRGPGR KPKVEVNTNS GEIIHKKRGR KPKKLQYAKP EDLEQNNVHP IRDEVLPSST CNFLSETNNV KEDLLQKKNR GGRKPKRKMK TQKLDADLLV PASVKVLRRS NRKKIDDPID EEE