title: New procedure for assay of p-hydroxybenzoic acid, precursor of coenzyme Q.
mesh_terms: D062365:Aminobenzoates / Q000494:pharmacology; D001565:Benzoates / Q000032:analysis*; D001681:Biological Assay; D002247:Carbon Isotopes; D003470:Culture Media; D004926:Escherichia coli / Q000254:growth & development / Q000378:metabolism*; D005827:Genetics, Microbial; D008722:Methods; D009154:Mutation; D010649:Phenylalanine / Q000494:pharmacology; D014451:Ubiquinone / Q000096:biosynthesis
chemical_list: D062365:Aminobenzoates; D001565:Benzoates; D002247:Carbon Isotopes; D003470:Culture Media; D014451:Ubiquinone; D010649:Phenylalanine