title: Use of dihydrofolate reductase from bovine liver, rather than from L. casei, for determining methotrexate.
mesh_terms: D000818:Animals; D002417:Cattle; D004355:Drug Stability; D007780:Lacticaseibacillus casei / Q000201:enzymology*; D008099:Liver / Q000201:enzymology*; D008727:Methotrexate / Q000032:analysis*; D013762:Tetrahydrofolate Dehydrogenase
chemical_list: D013762:Tetrahydrofolate Dehydrogenase; D008727:Methotrexate