Immunogen sequence: MSHVVVKNDP ELDQQLANLD LNSEKQSGGA STASKGRYIP PHLRNREASK GFHDKDSSGW SCSKDKDAYS SFGSRDSRGK PGYFSERGSG SRGRFDDRGR SDYDGIGNRE RPGFGRFERS GHSRWCDKSV EDDWSKPLPP SERLEQELFS GGNTGINFEK YDDIPVEATG SNCPPHIENF SDIDMGEIIM GNIELTRYTR PTPVQKHAIP; Po