Immunogen sequence: RRCPPWRGRR EQCLLPPEDS RLWQYLLSRS MREHPALRSL RLLTLEQPQG DSMMTCEQAQ LLANLARLIQ AKKALDLGTF TGYSALALAL ALPADGRVVT CEVDAQPPEL GRPLWRQAEA EHKIDLRLKP ALETLDELLA AGEAGTFDVA VVDADKENCS AYYERCLQLL RPGGILAVLR VLWRGKVLQP PKGDVAAECV RNLNERIRRD VRV