Blastocyst culture is a technique used for the blastocyst transformation of embryos.
All embryos do not develop into a blastocyst. With this technique, although embryos have 6-8 cells in 2-3 days under normal circumstances, embryos have numerous cells (about 80-100 cells) when cultured for 5-6 days.
Thus, the best embryo can be selected by the embryologist and the rest of the embryos in good condition are also frozen to be used in the future.
The selected embryo is transferred to the uterine cavity by IVF or ICSI techniques.