| Abstrakt: |
Laying Japanese quail were doubly-labeled with either 125I and 36Cl or 82Br and 36Cl. Eighteen-hour accumulations, expressed as percent of tracer doses, were: growing oocytes, 125I 48.2 vs. 36Cl 2.07, 82Br 4.01 vs. 36Cl 1.99; thyroids, 125I 10.6 vs. 36Cl .030, 82Br .027 vs. 36Cl .020. Concentrations (expressed as percent per gram) of the radionuclides in the growing oocytes and the thyroids as compared with concentrations in the plasma were: for oocytes, the mean 125I concentration was 199 times the mean plasma concentration, 82Br was .34 x and 36Cl was .13 x; for thyroids, 125I was 13,500 x, 82Br was .48 x, and 36Cl was .41 x the mean plasma concentration. Eight day totals for yolks of eggs laid were 125I 29% vs. 36Cl 3.7%. |
