Such a pretty embryo, except… It doesn’t have an inner cell mass. The inner cell mass is a cluster of cells that should form once the embryo reaches the blastocyst stage of development. These cells ultimately develop into the baby if implantation occurs. Unfortunately, embryos without an inner cell mass are not recommended for transfer, even if they are otherwise ideal in appearance. This situation is different from a poor quality inner cell mass. #ivf #embryo #embryology #explainingivf #inferti