Changes in the distribution of cortical granules (CGs) during oocyte maturation could be used as an important criterion to evaluate cytoplasmic maturation.

• 近年来,卵母细胞成熟过程中皮质颗粒(CGs)迁移和分布的变化作为胞质成熟的判定指标为越来越多的研究者接受。