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:建立显微受精方法，并探讨小鼠附睾精子在显微注射进入卵母胞后受精能力。

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.

而滤泡胞在卵母胞卵黄形成期，它RNA和DNA合成均较快，因认为滤泡胞合成分泌了一些物质参与卵黄形成。

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.

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

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.

时，次级卵母胞又分裂成两个大小不对等新胞：一个相对很大卵子（成熟卵胞）和一个微小次级极体。