For a better, secure browsing experience, we've made the tough decision to no longer support early versions of Internet Explorer (8 and below) and Firefox (22 and below). Unfortunately these older web browsers do not support many crucial developments in online security, and therefore represent a threat to your online security, as well as the security of MNT. For the safety and security of your online experience, we strongly recommend that you switch to a more modern browser (we've provided links to a few at the top right of the page). While you will continue to be able to read MNT as normal, your actual experience may not be exactly as we intended and you will not be permitted to log-in to, or register for an MNT account. New research published online in Developmental Cell indicates that higher expression of certain developmental genes at precise times in the uterus might improve pregnancy rates from in vitro fertilization-embryo transfers (IVF-ET). So far, these rates remain low at around 30%. Researchers at Cincinnati Children's Hospital Medical Center focused on Msx1 and Msx2, genes that play integral roles in organ formation during fetal development and are essential for ensuring that the uterus is in a receptive phase. ...