Immunogen sequence: VATEGVFVTE LDGTRTEDLE TIRLETKETF CIDDLPDLED DDETGKSLED QNMCFPKIEV ISSLSDDSDP ELDYTSLPVL ENLPTDTLSN IFAVSKDTSK AARVPFTDIF KKEAKRDLEI RKQDTKSPRP LIQELSDEDP SGQLLMPPTC QRDAAPLTSS GDRDSDFLAA SSPVPTESAA TPPETCVGVA QPSQALPTWD LTAFPAPKAS. Th