title: Background levels of DNA damage.
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899.
authors.forename: D S
authors.initials: DS
authors.lastname: Bergtold
authors.forename: M G
authors.initials: MG
authors.lastname: Simic
mesh_terms: D000818:Animals; D004247:DNA / Q000235:genetics*; D004249:DNA Damage; D005609:Free Radicals; D006801:Humans; D051379:Mice; D010084:Oxidation-Reduction; D012016:Reference Values; D013936:Thymidine / Q000031:analogs & derivatives / Q000652:urine
chemical_list: D005609:Free Radicals; C029390:thymidine glycol; D004247:DNA; D013936:Thymidine