title: Gene amplification in drug resistance: of mice and men.
mesh_terms: D000818:Animals; D002460:Cell Line; D004351:Drug Resistance; D005784:Gene Amplification; D006801:Humans; D007938:Leukemia / Q000188:drug therapy / Q000235:genetics; D008727:Methotrexate / Q000627:therapeutic use*; D051379:Mice; D009369:Neoplasms / Q000188:drug therapy* / Q000201:enzymology / Q000235:genetics; D009374:Neoplasms, Experimental / Q000188:drug therapy; D013762:Tetrahydrofolate Dehydrogenase / Q000235:genetics*
chemical_list: D013762:Tetrahydrofolate Dehydrogenase; D008727:Methotrexate