Immunogen sequence: KAFRSSGFGLE FNSFQHQLRI QDQEFQEGFD GGWCLSVHQP WASLLVRGIK RVEGRSWYTP HRGRLWIAAT AKKPSPQEVS ELQATYRLLR GKDVEFPNDY PSGCLLGCVD LIDCLSQKQF KEQFPDISQE SDSPFVF Highest antigen sequence identity to the following orthologs - mouse 89%, rat 88%.