A human embryo during the third day of its development Jim Dyson/Getty Images
TESTING DNA that is naturally discarded by embryos could safely聽reveal those produced using IVF that are most likely to聽lead to pregnancy.
IVF doctors try to transfer only聽the healthiest embryos for聽pregnancy. DNA testing to聽identify such embryos is already聽available, but it has to be聽done by removing a sample of聽cells, which carries risks.
鈥淭rying to refine our mechanisms for choosing the embryo that鈥檚 most likely to lead to pregnancy is something that鈥檚 been eluding us for ever,鈥 says Virginia Bolton, an embryologist…
