Carbon-14 in the biosphere and humans.
D002247:Carbon Isotopes / Q000032:analysis* / Q000097:blood; D004463:Ecology; D004777:Environment; D004781:Environmental Exposure; D006801:Humans; D008722:Methods; D008954:Models, Biological; D011847:Radioactive Fallout
D002247:Carbon Isotopes; D011847:Radioactive Fallout