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Radium isotope accumulation in animal thyroids |
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| Authors: | L Van Middlesworth P Correa R W Perkins A T Keane |
| Abstract: | Uranium and thorium daughters are ten times more concentrated in thyroids from some bovine animals than in the teeth of the same animals. These radioactive isotopes are believed to be from natural sources, but their resulting annual dosage of thyroid radiation has exceeded that from iodine-131 fallout. |
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