polar body

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，次级母胞又分裂两个大小不对等的新胞：一个相对很大的（胞）和一个微小的次级极体。

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.

目的探讨胞第一极体形态与原核期受精形态、裂期胚胎质量的关系。