Immunogen sequence: DHEFSCVFAG NPTSCLKLKD ERVYWKQVAR NLRSQKDICR YSKTAVKTRV CRKDFPESSL KLVSSTLFGN TKPRKEKTEM SPREHIKGKE TTPSSLAVTQ TMATKAPECV EDPDMANQRK TALEFCGETW SSLCTFFL Highest antigen sequence identity to the following orthologs: Mouse - 64%, Rat - 5