title: Molecular and cellular mechanisms underlying ineffective cancer chemotherapy.
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000235:genetics; D002471:Cell Transformation, Neoplastic / Q000187:drug effects*; D004260:DNA Repair / Q000187:drug effects; D004273:DNA, Neoplasm / Q000378:metabolism; D004351:Drug Resistance; D005260:Female; D005493:Folic Acid Antagonists; D005815:Genetic Code / Q000187:drug effects; D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use; D051379:Mice; D008938:Mitosis / Q000187:drug effects*; D010641:Phenotype; D013762:Tetrahydrofolate Dehydrogenase / Q000235:genetics; D014410:Tumor Stem Cell Assay
chemical_list: D000970:Antineoplastic Agents; D004273:DNA, Neoplasm; D005493:Folic Acid Antagonists; D013762:Tetrahydrofolate Dehydrogenase; D008727:Methotrexate