Smad4 is essential for epiblast scaling and morphogenesis after implantation, but nonessential prior to implantation in the mouse.
Robin E KrugerTristan FrumA Sophie BrummStephanie L HickeyKathy K NiakanFarina AzizMarcelio A ShammamiJada G RobertsAmy RalstonPublished in: bioRxiv : the preprint server for biology (2024)
-dependent signaling is first active after mouse embryo implantation, when it promotes epiblast morphogenesis non-cell autonomously.