title: Development of a sub-picogram competitive protein-binding method for steroids.
mesh_terms: D001360:Avidin; D001710:Biotin; D004970:Estrone / Q000032:analysis*; D005696:Galactosidases; D007118:Immunoassay / Q000379:methods*; D008239:Lysine / Q000031:analogs & derivatives; D011485:Protein Binding
chemical_list: D001360:Avidin; D004970:Estrone; D001710:Biotin; D005696:Galactosidases; C013411:biocytin; D008239:Lysine