Immunogen sequence: DAGFDVWMGN SRGNTWSRKH KTLSVSQDEF WAFSYDEMAK YDLPASINFI LNKTGQEQVY YVGHSQGTTI GFIAFSQIPE LAKRIKMFFA LGPVASVAFC TSPMAKLGRL PDHLIKDLFG DKEFLPQSAF LKWLGTHVCT HVILKELCGN LCFLLCGFNE RNLNMSRVDV YTTHSPAGTS VQNMLHWSQA VKFQKFQAFD WGSSAKNYFH YNQ