Immunogen sequence: DFGTLRTQDL PKVLNLHLLN SGTKDVPITS VRPTPQNDAI TVHFKPITLK ASESKYTKVA SISFDASKAK KPSQFSGKIT VKAKEKSYSK LEIPYQAEVL DGYLGFDHAA TLFHIRDSPA DPVERPIYLT NTFSFAIL Highest antigen sequence identity to the following orthologs: Mouse - 98%, Rat - 9