Fine Structure of Agranular Cells in the Gummy Shark (Mustelus manazo) Adenohypophysis : Morphology
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概要
- 論文の詳細を見る
A light and electron microscopic study of the gummy shark (Mustelus manazo) adenohypophysis revealed two types of agranular cells (cavity boundary cells and stellate cells) forming a loose network in the distal and ventral lobes. Both types of the cells showed a high nucleocytoplasmic ratio and electron-dense cytoplasm. The cavity boundary cells lining the hypophysial cavities displayed varying numbers of microvilli, occasional cilia and periluminal vesicles with flocculent content. In some of the stellate cells abutting on degenerating endocrine cells, phagocytotic activity was evident. These results suggest that the agranular cells in the shark adenohypophysis may be involved in sustaining the endocrine cells, absorption or transport of substances from the cells and disposition of dysfunctioning endocrine cells.
- 社団法人日本動物学会の論文
- 1988-10-15
著者
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Chiba Akira
Department Of Biology Nippon Dental University School Of Dentistry At Niigata
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Honma Yoshiharu
Sado Marine Biological Station Niigata University
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Honma Yoshiharu
Sado Marine Biological Station Faculty Of Science Niigata University
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Chiba Akira
Department Of Biology Nippon Dental University
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