title: A bioluminescent immunoassay for methotrexate at the subpicomole level.
mesh_terms: D000818:Animals; D001667:Binding, Competitive; D001517:Coleoptera / Q000201:enzymology; D006801:Humans; D007118:Immunoassay; D007700:Kinetics; D008156:Luciferases; D008163:Luminescent Measurements; D008727:Methotrexate / Q000097:blood*; D008832:Microchemistry
chemical_list: D008156:Luciferases; D008727:Methotrexate