title: 125I-Labeled protein A: reactivity with IgG and use as a tracer in radioimmunoassay.
mesh_terms: D000818:Animals; D006063:Chorionic Gonadotropin / Q000032:analysis; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis*; D007202:Indicators and Reagents; D007457:Iodine Radioisotopes; D007553:Isotope Labeling / Q000379:methods; D008832:Microchemistry; D011817:Rabbits; D011863:Radioimmunoassay / Q000379:methods*; D013045:Species Specificity; D013205:Staphylococcal Protein A; D014316:Tritium
chemical_list: D006063:Chorionic Gonadotropin; D007074:Immunoglobulin G; D007202:Indicators and Reagents; D007457:Iodine Radioisotopes; D013205:Staphylococcal Protein A; D014316:Tritium