title: Proceedings: Radioimmunoassay of norethisterone: a comparison of 3H and 125I-labelled radioligands.
mesh_terms: D000818:Animals; D006801:Humans; D007457:Iodine Radioisotopes; D009640:Norethindrone / Q000097:blood*; D011817:Rabbits / Q000276:immunology; D011863:Radioimmunoassay; D014316:Tritium
chemical_list: D007457:Iodine Radioisotopes; D014316:Tritium; D009640:Norethindrone