title: 13C-urea versus 14C-urea breath test: is there still a need for 14C-urea?
authors.forename: A M
authors.initials: AM
authors.lastname: Millar
authors.forename: J
authors.initials: J
authors.lastname: Hannan
mesh_terms: D000818:Animals; D001944:Breath Tests / Q000379:methods*; D002247:Carbon Isotopes; D002250:Carbon Radioisotopes; D016481:Helicobacter Infections / Q000175:diagnosis*; D006801:Humans; D011786:Quality Control; D011933:Reagent Kits, Diagnostic / Q000592:standards; D014508:Urea / Q000032:analysis* / Q000378:metabolism
chemical_list: D002247:Carbon Isotopes; D002250:Carbon Radioisotopes; D011933:Reagent Kits, Diagnostic; D014508:Urea