Objective To investigate the relationship between the first polar body morphology of oocyte and the zygote morphology in pronucleus stage, embryo quality in cleavage stage.
目的探讨卵细胞第一极体形态与原核期受精卵形态、卵裂期胚胎质量的关系。
Polar bodies
英语例句库
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，次级卵母细胞又分裂成两个大小不对等的新细胞：一个相对很大的卵子（成熟卵细胞）和一个微小的次级极体。
英语百科
Polar body
（重定向自Polar bodies）
A polar body is a small haploid cell that is formed concomitantly as an egg cell during oogenesis, but which generally does not have the ability to be fertilized. When certain diploid cells in animals undergo cytokinesis after meiosis to produce egg cells, they sometimes divide unevenly. Most of the cytoplasm is segregated into one daughter cell, which becomes the egg or ovum, while the smaller polar bodies only get a small amount of cytoplasm. They frequently die (apoptose) and disappear, but in some cases they remain and can be important in the life cycle of the organism.
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