The control group of oocytes, which were not injected with the donor, was also fragmented after enucleation.Most of the couplets of the parthenotes after intact cumulus cell injection were fragmented.

• 卵母细胞去核后不注射供体也发生碎裂，大部分的孤雌胚（不去核）在完整的卵丘细胞被注入后同样发生碎裂。