成熟およびエストロジェン処理に伴うアユ肝臓の組織学的変化 (魚類の生殖腺成熟に関する生理学的研究-1,2-〔英文〕)

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Histological observations were carried out to confirm the increase of protein synthetic activity in the liver parenchymal cells of Ayu following gonadal maturation and estrogen ad-ministration by light and electron microscopy. Sexual dimorphism was recognized in the liver cells of maturing fish. Nuclei and nucleoli were highly hypertrophied and RNA increased in liver cells of maturing females. On the other hand, such a change was not observed in the male. Estrogen treatment induced a hypertrophy of nuclei and nucleoli, an increase of RNA and a remarkable proliferation of rER in the cells of both immature and mature males. These histological results indicate an increase of protein synthetic activity, suggesting that the newly formed FSPP is synthesized in the liver cells under the influence of female hormone, estrogen.
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