title: A microELISA Raji cell assay to detect immune complexes.
abstract: The Raji cell assay to detect immune complexes has been modified to a microtiter ELISA system. Raji cells were fixed to microplate wells, then reacted with serum samples or aggregated human IgG. Horseradish peroxidase-conjugated anti-human IgG was used to detect bound complexes. There was a linear relationship between aggregated IgG added and optical density reading, with less than 2 micrograms/ml of aggregated IgG readily detected. When applied to human serum this technique gave results comparable to those obtained with the standard Raji cell assay. The Raji micro-ELISA is simpler to perform than the standard assay, is equally reliable, and avoids the hazards of radioactivity.
mesh_terms: D000936:Antigen-Antibody Complex / Q000032:analysis*; D002051:Burkitt Lymphoma / Q000276:immunology; D002460:Cell Line; D004797:Enzyme-Linked Immunosorbent Assay; D006735:Horseradish Peroxidase; D006801:Humans; D007074:Immunoglobulin G; D008832:Microchemistry
chemical_list: D000936:Antigen-Antibody Complex; D007074:Immunoglobulin G; D006735:Horseradish Peroxidase