So the Coryon consists of cells that come from the trophy blast as well as the mesoderm germ layer. And the Coronon functions in two important ways. Firstly, it creates a special fluid we call the coryonic fluid that is located inside the coreonic cavity. This space shown here. And what that fluid does is it absorbs some of that shock and the force that is experienced as a result of the outside environment. And what that does is it protects that developing embryo from any sort of damage.