Immunogen sequence: CEPCYQDTLE RCGKCGEVVR DHIIRALGQA FHPSCFTCVT CARCIGDESF ALGSQNEVYC LDDFYRKFAP VCSICENPII PRDGKDAFKI ECMGRNFHEN CYRCEDCRIL LSVEPTDQGC YPLNNHLFCK PCHV Highest antigen sequence identity to the following orthologs: Mouse - 89%, Rat - 88%.