title: B7-CREG in arthritis associated with pyoderma gangrenosum.
mesh_terms: D001168:Arthritis / Q000150:complications / Q000276:immunology*; D005734:Gangrene; D006680:HLA Antigens / Q000276:immunology*; D006801:Humans; D011711:Pyoderma / Q000150:complications / Q000276:immunology*
chemical_list: D006680:HLA Antigens