title: Studies with tetrahydrohomofolate and thymidylate synthetase from amethopterin-resistant mouse leukemia cells.
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D011232:Chemical Precipitation; D002850:Chromatography, Gel; D003857:Deoxyuridine / Q000378:metabolism; D004355:Drug Stability; D004926:Escherichia coli / Q000201:enzymology; D005492:Folic Acid / Q000494:pharmacology*; D007939:Leukemia L1210 / Q000201:enzymology*; D008025:Ligases / Q000037:antagonists & inhibitors; D008727:Methotrexate / Q000494:pharmacology*; D051379:Mice; D009711:Nucleotides; D013154:Spleen / Q000201:enzymology; D013160:Splenic Neoplasms; D013762:Tetrahydrofolate Dehydrogenase
chemical_list: D002247:Carbon Isotopes; D009711:Nucleotides; D005492:Folic Acid; D013762:Tetrahydrofolate Dehydrogenase; D008025:Ligases; D003857:Deoxyuridine; D008727:Methotrexate