title: Purification of thymidylate synthetase from enzyme-poor sources by affinity chromatography.
mesh_terms: D000818:Animals; D002417:Cattle; D002846:Chromatography, Affinity / Q000379:methods; D003488:Cyanogen Bromide; D004926:Escherichia coli / Q000201:enzymology*; D008727:Methotrexate; D008780:Methyltransferases / Q000302:isolation & purification*; D008970:Molecular Weight; D012685:Sepharose; D013940:Thymidylate Synthase / Q000302:isolation & purification* / Q000378:metabolism; D013950:Thymus Gland / Q000201:enzymology*
chemical_list: D012685:Sepharose; D008780:Methyltransferases; D013940:Thymidylate Synthase; D003488:Cyanogen Bromide; D008727:Methotrexate