Immunogen sequence: MFGACYKQPL KPSGSEPPAE ECRMTPRHAG CDVTEMQRIL SQPTFTEHLL RAVCLVNGKG SLSRPQESIL GSLARKNLRR IHRVSLVMCV RPL Highest antigen sequence identity to the following orthologs: Mouse - 23%, Rat - 25%. HHLA3 (HERV-H LTR-Associating 3) is an RNA Ge