Histology; normal and morbid.
- Dunham, Edward K. (Edward Kellogg), 1860-1922
- Date:
- 1898
Licence: Public Domain Mark
Credit: Histology; normal and morbid. Source: Wellcome Collection.
Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.
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![Chemical examination has revealed the presence of a substance called thyroiodin in the alveoli of the thyroid gland. This is a proteid containing a large amount of iodine. Its production by the thyroid gland may be increased by feeding with substances contain- ing considerable iodine or by administering iodide of potassium. Injections of thyroiodin serve to mitigate the effects of thyroidec- tomy, very much as do injections of thyroid extracts. It is by no means clear, however, that the thyroiodin is the only substance elaborated by the thyroid gland which may be of use to the tissues Fig. 159. 'O, ' Section of the thyroid gland of a kitten two months old. (Kohn.) Showing the positions of the outer and inner ijarathyroid bodies and a thymus follicle: t, thyroid gland; p, inner parathyroid; p', outer paratliyroid; th, thymus follicle; a, portion of the section showing the intimate relations between the thyroid and the inner parathyroid; b, por- tion demonstrating a similar intimate relation between the thyroid and the tissues of the thymus follicle. of other organs, or that the thyroid may not also remove injurious substances from the circulation and thus indirectly benefit other structures in the body.' ' Attention is also called to the possibility that an exce.ssive or morbid thyroid secretion may cause symptoms of disease attributable to disturbances in the functions of other organs, and may also occasion distur])ances in nutrition.](https://iiif.wellcomecollection.org/image/b21223841_0180.jp2/full/800%2C/0/default.jpg)
