Scientists Create a Mouse Embryo From Stem Cells, No Sperm or Egg Required
A comparison of a natural (top) and synthetic (bottom) mouse embryo, which shows similar brain and heart formation. Photo: Amadei and HandfordScientists in the UK say they’ve pulled off a feat of genetic engineering: creating a “synthetic” mouse embryo without the need for egg or sperm cells. The embryos were created with stem cells instead and were able to begin developing a brain, heart, and other organs for up to a week. The researchers believe that their work may one day help answer why many pregnancies in humans fail!-->!-->…