A 40-year-old woman with diminished ovarian reserve and her 42-year-old husband with mild oligospermia are considering assisted reproductive technology to conceive. After consultation with their reproductive endocrinologist, they decide to use donor eggs due to the woman’s low ovarian reserve. The husband provides a semen sample that is prepared for fertilization. Which technique is most appropriate for achieving fertilization in this case?

A 35-year-old woman with unexplained infertility undergoes her first IVF cycle. After ovarian stimulation, she produces a high number of follicles, and her estrogen levels are significantly elevated. The clinician decides to postpone the fresh embryo transfer due to the risk of ovarian hyperstimulation syndrome (OHSS). What is the most appropriate course of action to manage this patient’s embryos?

Which extraembryonic membrane is responsible for the exchange of gases and nutrients between the mother and the embryo?

Analyze the importance of gastrulation in the context of embryonic development.