Summary
In the thyroid follicles of species of cyclostomes, a hagfish and a lamprey, the distribution of stable iodine was examined by electron-probe X-ray microanalysis. A high concentration of stable iodine, heterogeneously distributed, was observed in the follicular cells of hagfish thyroid follicles. In the lamprey a low concentration of iodine was seen in the follicular lumina. The relative values for stable iodine determined in this way corresponded to values obtained by a chemical analytical method.
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Suzuki, S. Iodine distribution in the thyroid follicles of the hagfish, Eptatretus burgeri and lamprey, Lampetra japonica: Electron-probe X-ray microanalysis. Cell Tissue Res. 241, 539–543 (1985). https://doi.org/10.1007/BF00214573
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DOI: https://doi.org/10.1007/BF00214573