title: Antifolate effect of methotrexate: comment on the article by Cronstein.
authors.forename: I A
authors.initials: IA
authors.lastname: Jaffe
mesh_terms: D001172:Arthritis, Rheumatoid / Q000188:drug therapy; D004359:Drug Therapy, Combination; D005493:Folic Acid Antagonists / Q000627:therapeutic use*; D006801:Humans; D002955:Leucovorin / Q000008:administration & dosage; D008727:Methotrexate / Q000008:administration & dosage / Q000627:therapeutic use*
chemical_list: D005493:Folic Acid Antagonists; D002955:Leucovorin; D008727:Methotrexate