Once the eggs multiply, the embryos are ready to be transferred. About two to three days before the scheduled ... for IVF was ...

Because these blastoids only use ESCs derived from the epiblast, which becomes the embryo proper with germ layers, they model embryonic development’s pre-implantation period, up to seven days post ...

Research on human embryos is usually limited to the first 14 days of development, but as scientific capabilities improve, some argue that it is time to go further. Emilie is an assistant editor at the ...