title: Affinity exclusion: a new method for the separation of free and bound fractions in enzyme immunoassay.
mesh_terms: D000936:Antigen-Antibody Complex; D000941:Antigens / Q000032:analysis*; D002846:Chromatography, Affinity / Q000379:methods*; D007106:Immune Sera; D007124:Immunoenzyme Techniques; D007202:Indicators and Reagents; D013251:Steroid Isomerases / Q000302:isolation & purification
chemical_list: D000936:Antigen-Antibody Complex; D000941:Antigens; D007106:Immune Sera; D007202:Indicators and Reagents; D013251:Steroid Isomerases; C022660:steroid delta-isomerase