Immunogen sequence: KFSVEEYLVH ALQGSVSSGQ AHSLTSLAKT WAARGSRSRE PSPKTEDNEG VLLTEKLKPV DYEYREEVHW ATHQLRLGRG SFGEVHRMED KQTGFQCAVK KVRLEVFRAE ELMACAGLTS PRIVPLYGAV REGPWVNIFM ELLEGGSLGQ LVKEQGCLPE DRALYYLGQA LEGLEYLHSR RILHGDVKAD NVLLSSDGSH AALCDFGHAV CLQ