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Biol Bull 126: 282-290. (April 1964)
© 1964 Marine Biological Laboratory
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UPTAKE, TURNOVER AND EXCRETION OF 1-131 BY RAINBOW TROUT (SALMO GAIRDNERI)

J. B. HUNN 1 and P. O. FROMM 1

1 Department of Physiology and Pharmacology, Michigan State University, East Lansing, Michigan

1. NaSCN inhibits I-131 uptake by the lower jaw (thyroid) and increases the rate of loss of I-131 from trout, presumably by way of the gills.

2. The biological half-life (T frac12) of ionic I-131 in the blood plasma of trout is 1.7 days.

3. I-131 is excreted in the urine and by the gills, with the urinary loss being 3.8 times that of the gill per unit time.

4. The I-131 urine/ plasma ratios indicate that the trout kidney absorbs much of the filtered iodide.






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Copyright © 1964 by the Marine Biological Laboratory.