A Morphological Study of the Thyroid Gland in Risso's Dolphin, Grampus griseus.

DOI Web Site Web Site PubMed 被引用文献1件 参考文献24件
  • SHIMOKAWA Tetsuya
    The United Graduate School of Veterinary Science, Yamaguchi University
  • NAKANISHI Issei
    Department of Veterinary Anatomy, Faculty of Agriculture, Yamaguchi University
  • HONDO Eiichi
    Department of Veterinary Anatomy, Faculty of Agriculture, Yamaguchi University
  • IWASAKI Toshihide
    National Research Institute of Far Seas Fisheries
  • KISO Yasuo
    Department of Veterinary Anatomy, Faculty of Agriculture, Yamaguchi University
  • MAKITA Takashi
    Department of Veterinary Anatomy, Faculty of Agriculture, Yamaguchi University

書誌事項

タイトル別名
  • Morphological Study of the Thyroid Gland in Risso s Dolphin Grampus griseus

この論文をさがす

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

被引用文献 (1)*注記

もっと見る

参考文献 (24)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ