Immunogen sequence: IVQHIIMSNV TRYDLESQAF VSDLRPFLLN RTEHFIHEFI SFARSPFNMA AFDQHANYDC PAPSYEEGSH SDSSVITISP DEAETQELDI NVATVSQAPW DDETPGPSYS SSEQVHVTMS SLL Highest antigen sequence identity to the following orthologs: Mouse - 93%, Rat - 91%. Functions as