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Table 1 Number of embryos in each stage of development following oocyte thaw and fertilization by ICSI in women aged 40 and older who underwent minimal/mild ovarian stimulation IVF

From: Autologous oocyte cryopreservation in women aged 40 and older using minimal stimulation IVF

Embryo stage Numberof embryos
Completely hatched blastocyst 2
Hatched blastocyst 17
Expanded blastocyst 11
Blastocyst 17
Early blastocyst 1
Cavitating blastocyst 14
Morula 9
Compacted morula 25
14-cell embryo 1
10-cell embryo 1
9-cell embryo 3
8-cell embryo 58
7-cell embryo 13
6-cell embryo 34
5-cell embryo 19
4-cell embryo 48
3-cell embryo 15
2-cell embryo 32
1-cell embryo 18
1 pronuclei 10
2 pronuclei 6
3 pronuclei 17
4 pronuclei 9
Multi-pronuclei 2
Degenerated 103