Immunogen sequence: MEESEPERKR ARTDEVPAGG SRSEAEDEDD EDYVPYVPLR QRRQLLLQKL LQRRRKGAAE EEQQDSGSEP RGDEDDIPLG PQSNVSLLDQ HQHLKEKAEA RKESAKEKQL KEEEKILESV AEGRALMSVK EMAKGITYDD PIKTSWTPPR YVLSMSEERH ERVRKKYHIL VEGDGIPPPI KSFKEMKFPA AILRGLKKKG IHHPTPIQIQ GIP