Immunogen sequence: QYYQLSNTGQ DTISQMEERL GNTSQELQSL QVQNIKLAGS LQHVAEKLCR ELYNKAGAHR CSPCTEQWKW HGDNCYQFYK DSKSWEDCKY FCLSENSTML KINKQEDLEF AASQSYSEFF YSYWTGLLRP DSGKAWLWMD GTPFTSELFH IIIDVTSPRS RDCVAILNGM IFSKDCKELK RCVCERRAGM VKPESLHVPP ETLGEGD; Posit