title: [Morphologic, ultrastructural and histochemical changes in rectal cancer after intrarectal fluorouracil therapy].
mesh_terms: D004273:DNA, Neoplasm / Q000096:biosynthesis; D005472:Fluorouracil / Q000008:administration & dosage* / Q000009:adverse effects; D006651:Histocytochemistry; D006801:Humans; D012004:Rectal Neoplasms / Q000188:drug therapy* / Q000473:pathology / Q000648:ultrastructure
chemical_list: D004273:DNA, Neoplasm; D005472:Fluorouracil