Immunogen sequence: RIWDLKQGSPI HVLKGTEGHQ GPLTCVAANQ DGSLILTGSV DCQAKLVSAT TGKVVGVFRP ETVASQPSLG EGEESESNSV ESLGFCSVMP Highest antigen sequence identity to the following orthologs - mouse 98%, rat 98%. The gene product is an immunoglobulin-type protein.