A Morphological Study of the Thyroid Gland in Risso's Dolphin, Grampus griseus.
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- SHIMOKAWA Tetsuya
- The United Graduate School of Veterinary Science, Yamaguchi University
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- NAKANISHI Issei
- Department of Veterinary Anatomy, Faculty of Agriculture, Yamaguchi University
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- HONDO Eiichi
- Department of Veterinary Anatomy, Faculty of Agriculture, Yamaguchi University
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- IWASAKI Toshihide
- National Research Institute of Far Seas Fisheries
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- KISO Yasuo
- Department of Veterinary Anatomy, Faculty of Agriculture, Yamaguchi University
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- MAKITA Takashi
- Department of Veterinary Anatomy, Faculty of Agriculture, Yamaguchi University
書誌事項
- タイトル別名
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- Morphological Study of the Thyroid Gland in Risso s Dolphin Grampus griseus
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抄録
To accumulate histological information of cetaceans and basic information about metabolic systems of marine mammals, the thyroid gland of Risso's dolphins was examined by gross anatomical and light and electron microscopic observations. Gross anatomically, right and left lobes of the thyroid were not clearly discriminated, and no isthmus was observed. By light microscopy, irregular or oval follicular lumens were seen, and surrounded by follicular epithelial cells. By electron microscopy, the rough endoplasmic reticulum (rER) was seen adjacently to mitochondria at the basal and lateral regions of the follicular epithelial cells. RERs at the basal side of the cells sometimes contained flocculent material with the same electron density as the follicular lumen component. Microvilli were poorly developed at the apical surface of the cells. In the apical regions of the cells, there were typical Golgi complexes, multivesicular bodies, and granules with various size and electron density. The parafollicular cells were recognized among the follicular epithelial cells and in the interstitial regions but never protruded into the follicular lumen. These cells were present singly and/or formed clusters among the follicular epithelial cells, and often located adjacent to capillaries. They were obviously discriminated from follicular epithelial cells by higher electron density of their granules. In their cytoplasm, well-developed rERs, primary lysosomes, secondary lysosomes, multivesicular bodies, and phagosomes were recognized.
収録刊行物
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- The Journal of Veterinary Medical Science
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The Journal of Veterinary Medical Science 64 (6), 509-512, 2002
公益社団法人 日本獣医学会
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詳細情報 詳細情報について
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- CRID
- 1390282681402271872
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- NII論文ID
- 110003920886
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- NII書誌ID
- AA10796138
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- COI
- 1:STN:280:DC%2BD38zosVamtA%3D%3D
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- ISSN
- 13477439
- 09167250
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- NDL書誌ID
- 6200627
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- PubMed
- 12130836
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可