oad pe. BILLINGS: I wonder if there is any correlation abbdits cat it there so that it gets in the plants and the jact: and, therefore, they concentrate the icdine. DR. HUNGATE: Actually, if you had a rainfall thore, you would probably have a low valus because the rainfall would tend to take it to the ground rather than have it setile on the folinze. This is probably edsorbed on the surfaces because the time rate of goinz to ground and then going into the plant -- you would have a tendency for this to occur. DR. BILLINGS: In other words, it is just dust landings on the sagebrusn? DR. HUNGATE: DR. BILLINGS: Nest probably. Do you have 2 dow draft so that in the winter --— DR. HUNGATE: DR. BILLINGS: DR. FRENCH: amounts of iodine, too. You have a lower insect -Inversion -- and in just taking it on out On the sheep, you are feeding definite What was your technique for measuring the amount of activity there? . DR. HUNGATE: The sheep were | fed individual spiked pellets, and this was so that you knew what they got, and then counting of the thyroid gland was done with ea standard geometry 3-probe counter, counting from threes directions, centering the animal in a certain direction and getting this 3-probe counting of the thyroid, It was external monitoring.

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