Cryopreservation is usually performed as oocyte cryopreservation just before fertilisation, or as embryo cryopreservation immediately after fertilisation. As soon as a health care provider deems the uterine lining favorable for embryo transfer, the frozen embryos thaw. Then, a doctor transfers them into the uterus utilizing a catheter. The method is https://bookmarkedblog.com/story19125456/not-known-details-about-in-vitro-fertilization