title: Anti-folate resistance in leukemia: treatment with "high-dose" methotrexate and citrovorum factor.
mesh_terms: D002648:Child; D004351:Drug Resistance; D005493:Folic Acid Antagonists; D006801:Humans; D002955:Leucovorin / Q000008:administration & dosage* / Q000627:therapeutic use; D007938:Leukemia / Q000188:drug therapy* / Q000201:enzymology; D007945:Leukemia, Lymphoid / Q000188:drug therapy; D015470:Leukemia, Myeloid, Acute / Q000188:drug therapy; D008727:Methotrexate / Q000008:administration & dosage* / Q000627:therapeutic use
chemical_list: D005493:Folic Acid Antagonists; D002955:Leucovorin; D008727:Methotrexate