Immunogen sequence: VRSGELGAVI EGLLRVAREH AGTYRCEATN PRGSAAKNVA VTVEYGPRFE EPSCPSNWTW VEGSGRLFSC EVDGKPQPSV KCVGSGGATE GVLLPLAPPD PSPRAPRIPR VLAPGIYVCN ATNRHGSVAK TVVVS Highest antigen sequence identity to the following orthologs: Mouse - 74%, Rat - 74%.