title: Preparation of biologically active 125I-TSH.
mesh_terms: D000818:Animals; D001681:Biological Assay; D002417:Cattle; D007457:Iodine Radioisotopes; D007553:Isotope Labeling; D011863:Radioimmunoassay; D011956:Receptors, Cell Surface; D013961:Thyroid Gland / Q000378:metabolism; D013972:Thyrotropin / Q000302:isolation & purification / Q000378:metabolism
chemical_list: D007457:Iodine Radioisotopes; D011956:Receptors, Cell Surface; D013972:Thyrotropin