Immunogen sequence: FVSVRHLELA GENPSSDINC TKVLQGDVNE IQKVKLEILT VKFKKRPRWT PDDYINMTSD CSSFIKRRKY IVEPLSKEEA EFPIAYSIVV HHKIEMLDRL LRAIYMPQNF YCIHVDTKSE DSYLAAVMGI ASCFSNVFVA SRLESVVYAS WSRVQADLNC MKDLYAMSAN WKYLINLCGM DFPIKTNLEI VRKLKLLMGE NNLETERMPS HKE