title: [Thymidine and phenylalanine--a reply].
authors.forename: Søren
authors.initials: S
authors.lastname: Nørby
mesh_terms: D015415:Biomarkers; D006801:Humans; D010649:Phenylalanine / Q000235:genetics; D009626:Terminology as Topic; D013936:Thymidine / Q000235:genetics
chemical_list: D015415:Biomarkers; D010649:Phenylalanine; D013936:Thymidine