title: Problems with 125I-labeled tyrosyl ligands in digoxin RIA.
mesh_terms: D004077:Digoxin / Q000097:blood*; D007457:Iodine Radioisotopes; D011485:Protein Binding; D011863:Radioimmunoassay; D014443:Tyrosine / Q000378:metabolism*
chemical_list: D007457:Iodine Radioisotopes; D014443:Tyrosine; D004077:Digoxin