卵母细胞

Abstract： Aim:To establish the methods of microfertilization and explore the fertilizing potential of mouse sperm obtained from caput epididymidis and cauda epididymidis.

摘 要： 目的:建立显微受精的法，探讨小鼠附睾精子在显微注射进入卵母胞后的受精能力。

Conclusion The electrofusion efficiency may he improved by inserting more somatic cells into PVS when the somatic cells have a low electrofusion efficiency with oocytes.

结论低融合效率的体胞与卵母胞电融合时可通过增加PVS中体胞的数目来提高融合效率。

Then their synthese speed slows down.But the synthese of RNA and DNA inthe follicular cell is continuous during vitellogenesis, which may relate toformation of livetin.

而滤泡上皮胞在卵母胞卵黄形成期，它的RNA和DNA的合成均较快，因此认为滤泡上皮胞合成分泌了质参与卵黄蛋白的形成。

The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body.

此时，次级卵母胞又分裂成两个大小不对等的新胞：个相对很大的卵子（成熟卵胞）和个微小的次级极体。