Immunogen sequence: SRISSKFLLL KDKTQMTWIR PSHKTFQVSF LIGALTESNA GLYRCCYWKE TGWSKPSKVL ELEAPGQLPK PIFWIQAETP ALPGCNVNIL CHGWLQDLVF MLFKEGYAEP VDYQVPTGTM AIFSIDNLTP EDEGVYICRT HIQM. This gene encodes a member of the immunoglobulin-like domain-containing su