After fertilization, the fertilized egg (i.e. zygote) goes through several stages until it becomes a blastocyst and is therefore ready for implantation. Thus, in IVF cycles, opting for blastocyst embryo transfer can prevent embryo implantation failure and increase the success rates.
Culture to blastocyst: process day by day
By Dr. Joel G. Brasch (gynecologist), Zaira Salvador BSc, MSc (embryologist) and Sandra Fernández BA, MA (fertility counselor).
Last Update: 02/14/2018