Scientists Grow Human Amniotic Sac Using Stem Cells

London, UK: Researchers have successfully grown a functioning amniotic sac in the lab by using human stem cells, providing a new model to study early embryonic development. Typically, the embryo sits within an amniotic sac by weeks two to four, shielding it from external factors. Until now, direct observation was limited—scientists couldn’t ethically or practically study that stage inside the human womb. This breakthrough opens a window into the crucial early environment for the embryo, potentially helping understand miscarriages or congenital conditions.