title: Proceedings: Radioimmunoassay of synthetic progestins in plasma.
mesh_terms: D000818:Animals; D006207:Half-Life; D006801:Humans; D007457:Iodine Radioisotopes; D009640:Norethindrone / Q000097:blood*; D009644:Norgestrel / Q000097:blood*; D011817:Rabbits / Q000276:immunology; D011863:Radioimmunoassay
chemical_list: D007457:Iodine Radioisotopes; D009644:Norgestrel; D009640:Norethindrone