The cleavage rate of oocytescultured in maturation culture medium supplemented with ENGS or FCS, was 60.3%and 46.8% repectively, and there was no significant difference between them.

• 在成熟培养基内分别添加ENGS和FCS，其体外受精卵的卵裂率分别为60．3和46．8%25，卵裂率在添加两种血清的培养基之间无显著差异。