title: The assay of orotate by an isotope dilution procedure.
mesh_terms: D002250:Carbon Radioisotopes; D004926:Escherichia coli / Q000032:analysis; D007553:Isotope Labeling / Q000379:methods; D009963:Orotic Acid / Q000032:analysis*
chemical_list: D002250:Carbon Radioisotopes; D009963:Orotic Acid