PGD can be used to identify embryos that do not carry the gene for certain inherited diseases (such as cystic fibrosis and sickle cell anemia). This capability greatly reduces the risk that these diseases will be passed on to children and also greatly decreases the risk of miscarriages. The embryos that have been analyzed and are found to be normal are transferred into the woman's uterus, where, hopefully, they will implant and result in the birth of a healthy child.  PGD has also allowed the exclusion of embryos with chromosomal abnormalities. Our embryologists are capable of testing these embryos without interfering in their future development.