title: Stable gene amplification and its importance in clinical medicine.
mesh_terms: D004351:Drug Resistance; D004790:Enzyme Induction; D005784:Gene Amplification / Q000187:drug effects; D005786:Gene Expression Regulation; D005796:Genes; D006801:Humans; D008727:Methotrexate / Q000494:pharmacology; D008957:Models, Genetic; D009101:Multiple Myeloma / Q000235:genetics
chemical_list: D008727:Methotrexate