Immunogen sequence: SIVTQITGPT TVNGLERGSL TVQCVYRSGW EAYLKWWCRG AIWRDCKILV KTSGSEQEVK RDRVSIKDNQ KNRTFTVTME DLMKTDADTY WCGIEKTGND LGVTVQVTID PASTTASTPA PTTPTSTTFT APITQEETSS S Highest antigen sequence identity to the following orthologs: Mouse - 52%, Rat