Patient's question:
I especially hope to get pregnant this month. After cohabiting with my partner, it has been five days now. I wonder if five days can improve the blastocyst. I would like to ask, what is the maximum number of days a blastocyst can be cultured?Doctor's answer:
The fertilized egg formed by sperm and egg develops for 3 days, which is called an embryo. It further develops to form a hollow cell sphere on the 5th-6th day, known as a blastocyst. In the blastocyst, cells begin to differentiate. The larger cells clustered on one side of the embryo are called the inner cell mass, which will develop into various tissues of the fetus, while the smaller cells that extend and arrange along the inner wall of the zona pellucida are called trophoblast cells. They will develop into the embryonic membranes and placenta. Wishing you good health.