The spindles of human mature oocytes are sensitive to the temperature change and vulnerable in cryopreservation and thawing.The sources of human mature oocytes are also very limited.

• 摘要人成熟卵母细胞的纺锤体对低温敏感，在冷冻保存中极易受到伤害，加上成熟卵母细胞来源有限，人们开始研究人未成熟卵母细胞的冷冻保存。