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，次级卵母又分裂成小不对等的新：一相对很的卵子（成卵）和一微小的次级极体。

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.

目的探讨卵一极体形态与原核期受精卵形态、卵裂期胚胎质量的关系。