Train plows into car in Iowa as it drive near tracks

Old Railway Switches and Train Braking Systems

After multiple embryo transfers without success, it’s natural to question why If you’ve transferred high-quality blastocysts — especially chromosomally normal embryos (PGT-A tested) — each one should offer roughly a 50% chance of pregnancy. So when several transfers fail, even with embryos that look normal under the microscope, it may point to a deeper issue: The problem might not be the embryo… it may be the uterus. Dr. Sher uses a simple analogy: The embryo is the seed. The uterus is the soil.