title: Letter: Blood levels of 5-fluorouracil during intravenous infusion.
mesh_terms: D005472:Fluorouracil / Q000008:administration & dosage / Q000097:blood* / Q000627:therapeutic use; D005770:Gastrointestinal Neoplasms / Q000188:drug therapy; D006801:Humans; D007263:Infusions, Parenteral
chemical_list: D005472:Fluorouracil