title: A modification of the isotope assay method for determination of thymidylate synthetase in normal and malignant tissues.
mesh_terms: D000818:Animals; D005472:Fluorouracil / Q000494:pharmacology; D007553:Isotope Labeling / Q000379:methods; D007700:Kinetics; D008099:Liver / Q000187:drug effects / Q000201:enzymology*; D008115:Liver Regeneration / Q000187:drug effects; D008780:Methyltransferases / Q000032:analysis*; D051381:Rats; D013940:Thymidylate Synthase / Q000032:analysis*; D014316:Tritium
chemical_list: D014316:Tritium; D008780:Methyltransferases; D013940:Thymidylate Synthase; D005472:Fluorouracil