Xenopus laevis
Xenopus laevis
复制标题
非洲爪蟾
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
Hiroshi Kubota
中科院分区：
文献类型：
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作者：
ByTETSUO Takeichi;Hiroshi Kubota
观察到激活的爪蟾卵表面的一系列变化。在针刺激活的几秒钟内，在针刺点附近出现一个光区，并扩展为圆形光区（光波）。大约60秒后，这是一个黑暗的区域扩大作为一个圆形的黑暗区（暗波）。在21 °C时，两种波的传播速度约为9 μ m/s。在光照区，皮质颗粒被破坏，微绒毛伸长，卵表面扩张。另一方面，细长的微绒毛重新缩短，变成球形，卵表面在暗区收缩。
A series of changes in the surface of activated Xenopus eggs was observed. Within a few seconds of prick activation a light area appears near the pricking point and expands as a circular light zone (light wave). Some 60s later this is followed by a dark area expanding as a circular dark zone (dark wave). Both waves travel at a rate of about 9 jum/s at 21 °C. In the light zone, cortical granules are breaking down, microvilli are elongating, and the egg surface is expanded. On the other hand, the elongated microvilli are reshortening to become globular and the egg surface is contracted in the dark zone.