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Science 10 April 1964:
Vol. 144. no. 3615, pp. 178 - 179
DOI: 10.1126/science.144.3615.178
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Articles

Radioiodine Metabolism in Children and Adults after the Ingestion of Very Small Doses

M. A. Van Dilla 1 and M. J. Fulwyler 1

1 Los Alamos Scientific Laboratory University of California, Los Alamnos, New Mexico

One day after oral ingestion of very small doses (about 0.01 microcurie) of an I131/I135 mixture, the radioiodine content of the thyroid gland was similar in children and adults (about 20 percent of the dose ingested) as was the biological half-life of the iodine (about 90 days). Measurements were made in 15 minutes by means of a whole-body counter with a cylindrical sodium iodide (Tl) crystal, 20 cm in diameter and 10 cm thick.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)