title: Letter: Use of alkaline Sephadex G-25 for extraction and measurement of thyroxine.
mesh_terms: D002850:Chromatography, Gel; D005069:Evaluation Studies as Topic; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007457:Iodine Radioisotopes; D008722:Methods; D013974:Thyroxine / Q000097:blood*
chemical_list: D007457:Iodine Radioisotopes; D013974:Thyroxine