2 . 32 discarded unmutured oocytes on dayo , forty - two discarded unfertilized oocytes on day2 and 91 discarded unfertilized oocytes on day3 ( dayo refers to the day of oocyte collection ) from 53 icsi cycles ; 127 normal fertilized embryos from 62 ivf and 41 icsi cycles with a grade of ih - ivand improper to freeze after day3 embryo transfer ; 97 discarded embryos after day3 thawed - embryo transfer with a grade of iii - ivfrom 39 cycles . 3 天)废弃的未成熟卵子32个，受精后第二天山2天)未受精卵子42个和第三天口3天)未受精卵子91个; 62个ivt和41个icsl周期中d3天移植后评分较低的in一w级不适宜冷冻的正常受精胚胎共127个， 39个解冻周期中移植后废弃的m一w级胚胎97个。
