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ID 18672
Eprint ID
18672
FullText URL
Thumnail 72_1635.pdf 5.06 MB
Title Alternative
Fffect of High Hydrostatic Pressure on Cell Division
Author
Yasuda, Hirosi
Murakami, Tetuhide
Miki, Hukuziro
Abstract
In order to study the influence of pressure effects on the cell division of sea urchin eggs we have performed a series of experiments to enable us to understand the meaning and the importance of morphogenesis of the embryo. Sea urchin eggs used are of Temnopleurus tereumatics, in the stages of unfertilization to early blastulae. The experimental results can be summarized as follows. 1) In unfertilized eggs the elevation of fertilization membrane is delayed by high pressure of 300 kg/㎠ applied for 15 minutes. The delay is in proportion to the pressure intensity and duration. Neverthless, furrowing process of the egg does proceed after the pressure is withdrawn. 2) Likewise, in fertilized eggs, the furrowing are retarded under high pressure, in fertilized eggs, the furrowing are retarded under high pressure, in proportion to the pressure intensity and duoration. In most cases, however, the rate of the cell division catches up with that of the control before reaching the stages of bastulae. 3) The deformities of pluteus can be observed in applying the pressure neither to unfertilized, nor to fertilized eggs in all stages.
Published Date
1960-10-30
Publication Title
岡山医学会雑誌
Publication Title Alternative
Journal of Okayama Medical Association
Volume
volume72
Issue
issue8-10
Publisher
岡山医学会
Publisher Alternative
Okayama Medical Association
Start Page
1635
End Page
1641
ISSN
0030-1558
NCID
AN00032489
Content Type
Journal Article
Official Url
https://www.jstage.jst.go.jp/article/joma1947/72/8-10/72_8-10_1635/_article/-char/ja/
Related Url
http://www.okayama-u.ac.jp/user/oma/
language
日本語
Copyright Holders
岡山医学会
File Version
publisher
Refereed
True
Eprints Journal Name
joma