title: Problems affecting radioimmunoassay procedures.
mesh_terms: D000918:Antibody Specificity; D000941:Antigens / Q000302:isolation & purification; D000939:Epitopes; D007457:Iodine Radioisotopes; D011863:Radioimmunoassay / Q000379:methods / Q000592:standards*
chemical_list: D000941:Antigens; D000939:Epitopes; D007457:Iodine Radioisotopes