Immunogen sequence: LDKELNNYIM RCREWYGWHF PELGKIISDN LTYCKCLQKV GDRKNYASAK LSELLPEEVE AEVKAAAEIS MGTEVSEEDI CNILHLCTQV IEISEYRTQL YEYLQNRMMA IAPNVTVMVG ELVGARLIAH AGSLL Highest antigen sequence identity to the following orthologs: Mouse - 98%, Rat - 98%.