title: The effects of folic acid and aminopterin upon enzyme systems in vitro.
authors.forename: J N
authors.initials: JN
authors.lastname: WILLIAMS
mesh_terms: D000630:Aminopterin; D004798:Enzymes; D005492:Folic Acid; D005493:Folic Acid Antagonists; D066298:In Vitro Techniques
chemical_list: D004798:Enzymes; D005493:Folic Acid Antagonists; D005492:Folic Acid; D000630:Aminopterin