title: Modification of column chromatography in T4 analysis.
mesh_terms: D001322:Autoanalysis; D002852:Chromatography, Ion Exchange; D003365:Costs and Cost Analysis; D005069:Evaluation Studies as Topic; D007202:Indicators and Reagents; D007475:Ion Exchange Resins / Q000302:isolation & purification; D008722:Methods; D013974:Thyroxine / Q000097:blood*; D013997:Time Factors
chemical_list: D007202:Indicators and Reagents; D007475:Ion Exchange Resins; D013974:Thyroxine