. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ai UPTAKE BY TREATED FROG THYROID 65 \ooo-- 9OO-- 800-- TOO-- 6CO- • 500-- 400-- Soo Zoo-. 1OO--. Cont rol Experimental O1 5 6 —I 46 FIGURE 2. The effectiveness of sulfanilamide as an inhibitor of the uptake of I131 by the frog thyroid at successive time intervals after injection of the drug. Each point on the graph represents the average of two separate series of experiments. The ordinate shows radioactivity counts per two-minute intervals, and the abscissa indicates the time intervals in hours after injection of radioactiv
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ai UPTAKE BY TREATED FROG THYROID 65 \ooo-- 9OO-- 800-- TOO-- 6CO- • 500-- 400-- Soo Zoo-. 1OO--. Cont rol Experimental O1 5 6 —I 46 FIGURE 2. The effectiveness of sulfanilamide as an inhibitor of the uptake of I131 by the frog thyroid at successive time intervals after injection of the drug. Each point on the graph represents the average of two separate series of experiments. The ordinate shows radioactivity counts per two-minute intervals, and the abscissa indicates the time intervals in hours after injection of radioactive iodine. for the controls but is consistently lower. The thiourea-treated animals show an uptake which is per cent of that of the controls 20 minutes after the injection of radioactive iodine (24 hours and 20 minutes after administration of thiourea). The percentage falls steadily to a level of per cent at the 24 hour period (48 hours after thiourea administration). Then, as would be expected, a gradual re- covery is exhibited so that by 72 hours after thiourea administration the iodine uptake of the treated thyroids is approaching that of the controls. It is clearly indicated, therefore, that thiourea does affect the thyroid's ability to take up iodine and that,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
