Immunogen sequence: EYEPRSGEQV PLLLKMKRSK LALSKAIESG DTDLVFTVLL HLKNELNRGD FFMTLRNQPM ALSLYRQFCK HQELETLKDL YNQDDNHQEL GSFHIRASYA AEERIEGRVA ALQTAADAFY KAKNEFAAKA TEDQMRLLRL QRRLEDELGG QFLDLSLHDT VTTLILGGHN KRAEQLARDF RIPDKRLWWL KLTALADLED WEELEKFSKS KKS