Immunogen sequence: GLVGSLQACF LAKRNFQIDV YEAREDTRVA TFTRGRSINL ALSHRGRQAL KAVGLEDQIV SQGIPMRARM IHSLSGKKSA IPYGTKSQYI LSVSRENLNK DLLTAAEKYP NVKMHFNHR Highest antigen sequence identity to the following orthologs: Mouse - 82%, Rat - 84%. Kynurenine 3-mono