Immunogen sequence: QSKDHAATTAG AASLAGGHHR EAWATKGPSY EDLYTQNVVI NMDDQEDLHR ASLEGKSAKE RPIWLRESTV QGAYGSEDMK EGGIDMDAFQ EREEGHAGPD DNEEVMRALL IHEKKTSSAM AGSVGAAAPV TAANGSDSE Highest antigen sequence identity to the following orthologs - mouse 88%, rat 88