Immunogen sequence: LQKLKARSFH GSQRGAELQP SRPTSLSQDS PRSLHTPSLR PSDVVQVSLK FKLLDPPNMG QDICFVLLAL NMSSQFKDLK VNLSAQSLLH DGSPLSPFWQ DTAFITLSPK EAKTYPCKIS YSQYSQYLST DKLIRISALG EEKSSPEKIL VNKIITLSYP SITINVLGAA VVNQPLSIQV IFSNPLSEQV EDCVLTVEGS GLFKKQQKVF LGV