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:显微受精方法，并探讨小鼠附睾精子在显微注射进入卵母细胞后受精能力。

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.

而滤泡上皮细胞在卵母细胞卵黄形成期，它RNA和DNA成均较快，因认为滤泡上皮细胞成分泌了一些物质参与卵黄蛋白形成。

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.

结论低效率体细胞与卵母细胞电时可通过增加PVS中体细胞数目来提效率。

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