Cytological studies on abnormal ova in mature ovaries of mice observed at different phases of oestrous cycle

広島大学水畜産学部紀要 1 巻 3 号 343-351 頁 1957-12-25 発行
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タイトル ( eng )
Cytological studies on abnormal ova in mature ovaries of mice observed at different phases of oestrous cycle
タイトル ( jpn )
マウスの性周期各期の成熟卵巣内の異常卵についての細胞学的研究
作成者
Nakamura Tsunenori
収録物名
広島大学水畜産学部紀要
Journal of the Faculty of Fisheries and Animal Husbandry
1
3
開始ページ 343
終了ページ 351
抄録
A cytological investigation has been carried out with the ova derived from 66 ovaries which were taken from a series of thirty-three mature unmated mice (Mus musculus, "Swiss albinos") at different phases of the oestrous cycle, with special reference to the maturation and degeneration of ova in mature ovaries.

The atretic follicles of ova which showed advance towards the first maturation division are very abundant in number in the mature ovary, being 85 (35 %) in total. The abnormal ova are mostly at the phase of proestrus in the oestrous cycle. It is most probable that the atretic follicles are in the process of degeneration, and the disintegration takes place either in the egg body or in the granulosa cells.

The polyovular follicles observed in 60 normal ovaries are 80 in total. Out of them 62 follicles (78 %) contain biovular ones. The majority of polyovular follicles are in the process of degeneration, though there are a few examples which are suggestive of the possibility of their maturation.

The atretic follicles are very abundant in three mice which showed an abnormally long dioestrus cycle. From this evidence it is presumable that there is a relationship between the maturation of ova and the effect of the anterior pituitary hormone.
NDC分類
動物学 [ 480 ]
言語
英語
資源タイプ 紀要論文
出版者
広島大学水畜産学部
発行日 1957-12-25
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 0440-8756
[NCID] AN00213563