title: Basis for clinical resistance to antitumor nucleoside analogs.
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D004341:Drug Evaluation; D004353:Drug Evaluation, Preclinical; D004351:Drug Resistance; D005260:Female; D006801:Humans; D051379:Mice; D008811:Mice, Inbred DBA; D009705:Nucleosides / Q000627:therapeutic use*; D011684:Purine Nucleosides / Q000627:therapeutic use; D011741:Pyrimidine Nucleosides / Q000627:therapeutic use; D013329:Structure-Activity Relationship; D013997:Time Factors
chemical_list: D000970:Antineoplastic Agents; D009705:Nucleosides; D011684:Purine Nucleosides; D011741:Pyrimidine Nucleosides