title: Microfiltration as a means of separating free antigen from antigen-antibody complexes in immunoassay.
mesh_terms: D000818:Animals; D000936:Antigen-Antibody Complex; D000941:Antigens / Q000302:isolation & purification*; D001322:Autoanalysis; D005374:Filtration; D006801:Humans; D008722:Methods; D011863:Radioimmunoassay / Q000379:methods*; D013972:Thyrotropin / Q000032:analysis
chemical_list: D000936:Antigen-Antibody Complex; D000941:Antigens; D013972:Thyrotropin