Immunogen sequence: RQCVNTFGSY ICKCHKGFDL MYIGGKYQCH DIDECSLGQY QCSSFARCYN VRGSYKCKCK EGYQGDGLTC VYIPKVMIEP SGPIHVPKGN GTILKGDTGN NNWIPDVGST WWPPKTPYIP PIITNRPTSK PTTRPTPK Highest antigen sequence identity to the following orthologs: Mouse - 83%, Rat - 5