sera of 131 patients with inflammatory bowel disease ( 78 crohn 's disease , 53 ulcerative colitis ) representing a wide spectrum of disease activity , treatment and presence or absence of extraintestinal manifestations were tested for circulating immune complexes using raji cell indirect immunofluorescence assay , raji cell radioimmunoassay , c1q solid phase assay and polyethylene glycol precipitation coupled with measurements of optical density and subsequent immunoelectrophoresis or radial immunodiffusion .
C0021390
inflammatory
C0010346
crohn 's disease