Development of folates and folic acid antagonists in cancer chemotherapy.
D005492:Folic Acid / Q000378:metabolism*; D005493:Folic Acid Antagonists / Q000627:therapeutic use*; D006801:Humans; D009369:Neoplasms / Q000188:drug therapy*
D005493:Folic Acid Antagonists; D005492:Folic Acid