Immunogen sequence: KILMGNEELT RLWNLCPDNM EACKSETREH MPTLEEFFEE AIEQADPENM VENEYKAVNN SNYGWRALRL LARRSPHFFQ PTNQQFKSLP EYLENMVIKL AKELPPPSEE IKTGEDEDEE DNDALLK Highest antigen sequence identity to the following orthologs: Mouse - 98%, Rat - 88%. HPR1 is