title: The necessity of chromatographic purification prior to radioimmunoassay of diethylstilbestrol in the urine of cattle.
mesh_terms: D000818:Animals; D002417:Cattle / Q000652:urine*; D002854:Chromatography, Paper; D004054:Diethylstilbestrol / Q000302:isolation & purification* / Q000652:urine; D011863:Radioimmunoassay
chemical_list: D004054:Diethylstilbestrol