title: Experimental and clinical studies on nucleoside analogs as antitumor agents.
mesh_terms: D000368:Aged; D000818:Animals; D003561:Cytarabine / Q000031:analogs & derivatives / Q000627:therapeutic use*; D004351:Drug Resistance; D005437:Flucytosine / Q000031:analogs & derivatives / Q000627:therapeutic use; D005472:Fluorouracil / Q000627:therapeutic use; D006801:Humans; D007939:Leukemia L1210 / Q000188:drug therapy*; D007942:Leukemia, Experimental / Q000188:drug therapy*; D008297:Male; D008727:Methotrexate / Q000627:therapeutic use; D051379:Mice; D009303:Nasopharyngeal Neoplasms / Q000188:drug therapy; D013329:Structure-Activity Relationship
chemical_list: D003561:Cytarabine; D005437:Flucytosine; D005472:Fluorouracil; D008727:Methotrexate