title: Use of the double-antibody method to separate antibody bound from free ligand in radioimmunoassay.
mesh_terms: D000818:Animals; D000906:Antibodies / Q000302:isolation & purification*; D011232:Chemical Precipitation; D008024:Ligands; D011233:Precipitin Tests; D011817:Rabbits / Q000276:immunology; D011863:Radioimmunoassay / Q000379:methods*; D012756:Sheep / Q000276:immunology
chemical_list: D000906:Antibodies; D008024:Ligands