Immunogen sequence: EAKEEFAHKT LAMDVMKPRR NDPLLTVLTQ DSMTVEDVET IISETTYSGF PVVVSRESQR LVGFVLRRDL IISIENARKK QDGVVSTSII YFTEHSPPLP PYTPPTLKLQ NILDLSPFTV TD Highest antigen sequence identity to the following orthologs: Mouse - 98%, Rat - 98%. Proton-couple