title: Molecular distribution of preformed thyroglobulin immune complexes.
abstract: Thyroglobulin anti-thyroglobulin immune complexes with human antibodies from four patient sera were performed in a wide range of antigen: antibody ratios and run in 5%-40% sucrose gradients. The fractionation showed simple distributions of thyroglobulin molecules in immune complexes, especially in far antigen and far antibody excess. A computer simulation analysis which utilized the experimental presumptions and assumed an association constant in the order of 10(9), showed a large degree of similarity to the experimental results. Thus, a thermodynamically simple explanation of immune complex formation did not contradict the experimental thyroglobulin anti-thyroglobulin complex formation.
mesh_terms: D000936:Antigen-Antibody Complex; D002499:Centrifugation, Density Gradient; D003201:Computers; D004306:Dose-Response Relationship, Immunologic; D006801:Humans; D008954:Models, Biological; D008970:Molecular Weight; D013816:Thermodynamics; D013954:Thyroglobulin / Q000276:immunology*
chemical_list: D000936:Antigen-Antibody Complex; D013954:Thyroglobulin