title: Acquired methotrexate resistance in lymphoblasts resulting from altered kinetic properties of dihydrofoltate reductase.
mesh_terms: D004351:Drug Resistance; D006358:Hot Temperature; D006801:Humans; D066298:In Vitro Techniques; D007700:Kinetics; D008214:Lymphocytes / Q000187:drug effects / Q000201:enzymology*; D008727:Methotrexate / Q000494:pharmacology*; D009154:Mutation; D013762:Tetrahydrofolate Dehydrogenase / Q000378:metabolism*
chemical_list: D013762:Tetrahydrofolate Dehydrogenase; D008727:Methotrexate