Immunogen sequence: MGDGAVKQGF LYLQQQQTFG KKWRRFGASL YGGSDCALAR LELQEGPEKP RRCEAARKVI RLSDCLRVAE AGGEASSPRD TSAFFLETKE RLYLLAAPAA ERGDWVQAIC LLAFPGQRKE LSGPEGKQSR PCMEENELYS SAVTVGPHKE FAVTMRPTEA SERCHLRGSY TLRAGESALE LWGGPEPGTQ LYDWPYRFLR RFGRDKVTFS FEA