One of the first documents patients sign when starting in vitro fertilization asks them to consider the very end of their treatment: What would they like to do with extra embryos, if they have any?

Lab-grown structures with the potential to develop into fetuses should be defined — and regulated — as embryos, some researchers say. It is time for a redefinition of the human embryo, a team of ...

Many clinical interventions used during in-vitro fertilization (IVF), including ultrasound guidance at the time of embryo transfers appear to increase pregnancy rates, however prolonged bed rest ...