Immunogen sequence: DSVASLGGTP LYMDRQGIDI LYSGSQKALN APPGTSLISF SDKAKKKMYS RKTKPFSFYL DIKWLANFWG CDDQPRMYHH TIPVISLYSL RESLALIAEQ GLENSWRQHR EAAAYLHGRL QALGLQLFVK DPALRLPTVT TVAVPAGYDW RDIVSYVIDH FDIEIMGGLG PSTGKVLRIG LLGCNATREN VDRVTEALRA ALQHCPKKKL. Th