Immunogen sequence: ESQVDHSTIH SQETKHYLTV NLTTLRVWCY ACSKEVFLDR KLGTQPSLPH VRQPHQIQEN SVQDFKIPSN TTLKTPLVAV FDDLDIEADE EDELRARGLT GLKNIGNTCY MNAALQALS Highest antigen sequence identity to the following orthologs: Mouse - 91%, Rat - 91%. DNA-directed RNA