title: A technique for the direct counting of carbon 14  or tritium in biological fluids.
mesh_terms: D001826:Body Fluids; D002247:Carbon Isotopes; D004147:Dioxins; D008722:Methods; D011874:Radiometry; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D004147:Dioxins; D014316:Tritium