Immunogen sequence: NWLLLNQPRL GTDTVPVCFS PANVRGQSLI IINVNVAVPS VHVPEVPSYP ETPWYPDTPS YPDTTSVSST TELTSPVEDY TDLTTIQVTD DRSVW Highest antigen sequence identity to the following orthologs: Mouse - 65%, Rat - 73%. Leucine-rich repeats (LRRs) are 20-29 amino