Immunogen sequence: GQTECTGGCT FTLPGDWTSG HVGVPLACNY VKLEDVADMN YFTVNNEGEV CIKGTNVFKG YLKDPEKTQE ALDSDGWLHT GDIGRWLPNG TLKIIDRKKN IFKLAQGEYI APEKIENIYN RSQPVLQIFV HGESLRSSLV GVVVPDTDVL PSFAAKLGVK GSFEELCQNQ VVREAILEDL QKIGKESGLK TFEQVKAIFL HPEPFSIENG LLT