title: Karyotypic analysis of methotrexate-resistant and sensitive mouse L5178Y cells.
mesh_terms: D000818:Animals; D002460:Cell Line; D002874:Chromosome Mapping; D002875:Chromosomes / Q000648:ultrastructure*; D004351:Drug Resistance; D005784:Gene Amplification; D005796:Genes; D007621:Karyotyping; D007945:Leukemia, Lymphoid; D008727:Methotrexate / Q000494:pharmacology*; D051379:Mice; D013762:Tetrahydrofolate Dehydrogenase / Q000235:genetics*
chemical_list: D013762:Tetrahydrofolate Dehydrogenase; D008727:Methotrexate