title: Effective absorption and utilization of oral formyltetrahydrofolate in man.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000368:Aged; D002247:Carbon Isotopes; D002852:Chromatography, Ion Exchange; D005260:Female; D005493:Folic Acid Antagonists / Q000009:adverse effects; D006801:Humans; D007273:Injections, Intramuscular; D007275:Injections, Intravenous; D007408:Intestinal Absorption; D002955:Leucovorin / Q000008:administration & dosage* / Q000097:blood / Q000378:metabolism* / Q000652:urine; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000188:drug therapy; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D005493:Folic Acid Antagonists; D014316:Tritium; D002955:Leucovorin