title: Use of heteropoly acids as immunological precipitin brighteners.
mesh_terms: D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D007202:Indicators and Reagents; D008982:Molybdenum; D010756:Phosphoric Acids; D010772:Phosphotungstic Acid; D011233:Precipitin Tests / Q000379:methods*; D012685:Sepharose
chemical_list: D007202:Indicators and Reagents; D010756:Phosphoric Acids; D010772:Phosphotungstic Acid; D008982:Molybdenum; D012685:Sepharose