Understanding PGS (Preimplantation Genetic Screening)
PGS (Preimplantation Genetic Screening) involves using IVF techniques， to fertilize eggs and sperm in vitro and allow them to develop into embryos. When the embryo reaches the blastocyst stage on day 5–7, a biopsy is taken from the trophectoderm cells for analysis. The embryo is then cryopreserved while next-generation sequencing determines whether it is euploid. […]